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Home / DTC / P1712 — Lever release solenoid fault

P1712 — Lever release solenoid fault

Detailed page for trouble code P1712.

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22,461specific
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Code

P1712

ALFA ROMEO P — Powertrain

Lever release solenoid fault

Brand: ALFA ROMEO
Type: P — Powertrain
Views: UK: 3 EN: 5 RU: 3
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or shorted wiring harness to the lever release solenoid
  • Corroded, loose or damaged solenoid connector
  • Failed lever release solenoid (coil or internal mechanism)
  • Poor ground or missing power supply to the solenoid
  • Intermittent connection or water ingress at connector
  • PCM/TCM driver fault (rare) or software issue

Symptoms

  • Inability to shift into or out of park/gear (shift interlock failure)
  • Transmission stuck in a single gear or limp-home mode
  • Illuminated transmission or MIL warning lamp
  • Clicking from the transmission area when shift is requested
  • Intermittent or consistent shift abnormality

What to check

  • Read and record freeze frame and live data with an appropriate scan tool
  • Visual inspection of solenoid connector and wiring for damage or corrosion
  • Check battery voltage and ground quality at the vehicle
  • Measure solenoid coil resistance with multimeter
  • Backprobe connector to verify power and control signal when activated
  • Check for related codes that may indicate wiring or PCM issues

Signal parameters

  • Key ON (engine OFF): battery supply present at solenoid power pin (~12 V)
  • When activated: control side may be switched to ground or driven by PWM — observe switching activity
  • Typical coil resistance: ~10–40 ohms (varies by model) — consult factory specs
  • Expected control signal: steady ground or PWM duty cycle when commanded; frequency and duty vary by design
  • Open-circuit or very high resistance indicates broken coil/wiring; near 0 ohms indicates short

Diagnostic algorithm

  1. Verify the DTC: clear codes and attempt to recreate the fault while monitoring live data and freeze frame information.
  2. Visual inspection: examine solenoid connector and harness for corrosion, water intrusion, broken wires, pin damage, or signs of overheating.
  3. Check battery voltage and strong ground at the solenoid connector with ignition ON; verify voltage does not drop under load.
  4. Measure coil resistance at the solenoid pins (unplugged). Compare to manufacturer specification; very high or infinite resistance = open coil; near zero = shorted coil.
  5. With connector plugged in, backprobe the control and power pins while commanding the solenoid ON using a scan tool. Verify presence of battery voltage on the supply and switching/ground or PWM on the control line.
  6. If no control signal from PCM/TCM, inspect wiring continuity from connector to module and check module driver outputs. Repair any open/shorts, replace damaged connector.
  7. If wiring and control signals are correct but solenoid does not actuate, perform a bench test (apply fused 12 V as appropriate) to confirm mechanical/coil failure and replace solenoid if required.
  8. After repairs, clear codes and perform functional test and test drive to confirm the fault does not return. If code returns despite repairs, consider module diagnosis or reprogramming per factory procedures.

Likely causes

  • Damaged or corroded connector at the solenoid
  • Failed solenoid coil
  • Broken or chafed wiring between PCM/TCM and solenoid
  • Insufficient battery voltage or poor ground

Fault status

⚠️ Status
P1712 — Lever release solenoid circuit fault detected. Electrical or functional failure of the lever release solenoid or its circuit; inspection and testing of connector, wiring, and solenoid required.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours
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Code

P1712

DAEWOO P — Powertrain

Fluid temp. snsr ct-low input

Brand: DAEWOO
Type: P — Powertrain
Views: UK: 2 EN: 6 RU: 3
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or shorted wiring harness to the lever release solenoid
  • Corroded, loose or damaged solenoid connector
  • Failed lever release solenoid (coil or internal mechanism)
  • Poor ground or missing power supply to the solenoid
  • Intermittent connection or water ingress at connector
  • PCM/TCM driver fault (rare) or software issue

Symptoms

  • Inability to shift into or out of park/gear (shift interlock failure)
  • Transmission stuck in a single gear or limp-home mode
  • Illuminated transmission or MIL warning lamp
  • Clicking from the transmission area when shift is requested
  • Intermittent or consistent shift abnormality

What to check

  • Read and record freeze frame and live data with an appropriate scan tool
  • Visual inspection of solenoid connector and wiring for damage or corrosion
  • Check battery voltage and ground quality at the vehicle
  • Measure solenoid coil resistance with multimeter
  • Backprobe connector to verify power and control signal when activated
  • Check for related codes that may indicate wiring or PCM issues

Signal parameters

  • Key ON (engine OFF): battery supply present at solenoid power pin (~12 V)
  • When activated: control side may be switched to ground or driven by PWM — observe switching activity
  • Typical coil resistance: ~10–40 ohms (varies by model) — consult factory specs
  • Expected control signal: steady ground or PWM duty cycle when commanded; frequency and duty vary by design
  • Open-circuit or very high resistance indicates broken coil/wiring; near 0 ohms indicates short

Diagnostic algorithm

  1. Verify the DTC: clear codes and attempt to recreate the fault while monitoring live data and freeze frame information.
  2. Visual inspection: examine solenoid connector and harness for corrosion, water intrusion, broken wires, pin damage, or signs of overheating.
  3. Check battery voltage and strong ground at the solenoid connector with ignition ON; verify voltage does not drop under load.
  4. Measure coil resistance at the solenoid pins (unplugged). Compare to manufacturer specification; very high or infinite resistance = open coil; near zero = shorted coil.
  5. With connector plugged in, backprobe the control and power pins while commanding the solenoid ON using a scan tool. Verify presence of battery voltage on the supply and switching/ground or PWM on the control line.
  6. If no control signal from PCM/TCM, inspect wiring continuity from connector to module and check module driver outputs. Repair any open/shorts, replace damaged connector.
  7. If wiring and control signals are correct but solenoid does not actuate, perform a bench test (apply fused 12 V as appropriate) to confirm mechanical/coil failure and replace solenoid if required.
  8. After repairs, clear codes and perform functional test and test drive to confirm the fault does not return. If code returns despite repairs, consider module diagnosis or reprogramming per factory procedures.

Likely causes

  • Damaged or corroded connector at the solenoid
  • Failed solenoid coil
  • Broken or chafed wiring between PCM/TCM and solenoid
  • Insufficient battery voltage or poor ground

Fault status

⚠️ Status
P1712 — Lever release solenoid circuit fault detected. Electrical or functional failure of the lever release solenoid or its circuit; inspection and testing of connector, wiring, and solenoid required.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours
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Code

P1712

FIAT P — Powertrain

Lever release solenoid fault

Brand: FIAT
Type: P — Powertrain
Views: UK: 3 EN: 3 RU: 2
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or shorted wiring harness to the lever release solenoid
  • Corroded, loose or damaged solenoid connector
  • Failed lever release solenoid (coil or internal mechanism)
  • Poor ground or missing power supply to the solenoid
  • Intermittent connection or water ingress at connector
  • PCM/TCM driver fault (rare) or software issue

Symptoms

  • Inability to shift into or out of park/gear (shift interlock failure)
  • Transmission stuck in a single gear or limp-home mode
  • Illuminated transmission or MIL warning lamp
  • Clicking from the transmission area when shift is requested
  • Intermittent or consistent shift abnormality

What to check

  • Read and record freeze frame and live data with an appropriate scan tool
  • Visual inspection of solenoid connector and wiring for damage or corrosion
  • Check battery voltage and ground quality at the vehicle
  • Measure solenoid coil resistance with multimeter
  • Backprobe connector to verify power and control signal when activated
  • Check for related codes that may indicate wiring or PCM issues

Signal parameters

  • Key ON (engine OFF): battery supply present at solenoid power pin (~12 V)
  • When activated: control side may be switched to ground or driven by PWM — observe switching activity
  • Typical coil resistance: ~10–40 ohms (varies by model) — consult factory specs
  • Expected control signal: steady ground or PWM duty cycle when commanded; frequency and duty vary by design
  • Open-circuit or very high resistance indicates broken coil/wiring; near 0 ohms indicates short

Diagnostic algorithm

  1. Verify the DTC: clear codes and attempt to recreate the fault while monitoring live data and freeze frame information.
  2. Visual inspection: examine solenoid connector and harness for corrosion, water intrusion, broken wires, pin damage, or signs of overheating.
  3. Check battery voltage and strong ground at the solenoid connector with ignition ON; verify voltage does not drop under load.
  4. Measure coil resistance at the solenoid pins (unplugged). Compare to manufacturer specification; very high or infinite resistance = open coil; near zero = shorted coil.
  5. With connector plugged in, backprobe the control and power pins while commanding the solenoid ON using a scan tool. Verify presence of battery voltage on the supply and switching/ground or PWM on the control line.
  6. If no control signal from PCM/TCM, inspect wiring continuity from connector to module and check module driver outputs. Repair any open/shorts, replace damaged connector.
  7. If wiring and control signals are correct but solenoid does not actuate, perform a bench test (apply fused 12 V as appropriate) to confirm mechanical/coil failure and replace solenoid if required.
  8. After repairs, clear codes and perform functional test and test drive to confirm the fault does not return. If code returns despite repairs, consider module diagnosis or reprogramming per factory procedures.

Likely causes

  • Damaged or corroded connector at the solenoid
  • Failed solenoid coil
  • Broken or chafed wiring between PCM/TCM and solenoid
  • Insufficient battery voltage or poor ground

Fault status

⚠️ Status
P1712 — Lever release solenoid circuit fault detected. Electrical or functional failure of the lever release solenoid or its circuit; inspection and testing of connector, wiring, and solenoid required.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours
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Code

P1712

FORD P — Powertrain

Trans Torque Reduction Request Signal Malfunction

Brand: FORD
Type: P — Powertrain
Views: UK: 12 EN: 31 RU: 14
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or shorted wiring harness to the lever release solenoid
  • Corroded, loose or damaged solenoid connector
  • Failed lever release solenoid (coil or internal mechanism)
  • Poor ground or missing power supply to the solenoid
  • Intermittent connection or water ingress at connector
  • PCM/TCM driver fault (rare) or software issue

Symptoms

  • Inability to shift into or out of park/gear (shift interlock failure)
  • Transmission stuck in a single gear or limp-home mode
  • Illuminated transmission or MIL warning lamp
  • Clicking from the transmission area when shift is requested
  • Intermittent or consistent shift abnormality

What to check

  • Read and record freeze frame and live data with an appropriate scan tool
  • Visual inspection of solenoid connector and wiring for damage or corrosion
  • Check battery voltage and ground quality at the vehicle
  • Measure solenoid coil resistance with multimeter
  • Backprobe connector to verify power and control signal when activated
  • Check for related codes that may indicate wiring or PCM issues

Signal parameters

  • Key ON (engine OFF): battery supply present at solenoid power pin (~12 V)
  • When activated: control side may be switched to ground or driven by PWM — observe switching activity
  • Typical coil resistance: ~10–40 ohms (varies by model) — consult factory specs
  • Expected control signal: steady ground or PWM duty cycle when commanded; frequency and duty vary by design
  • Open-circuit or very high resistance indicates broken coil/wiring; near 0 ohms indicates short

Diagnostic algorithm

  1. Verify the DTC: clear codes and attempt to recreate the fault while monitoring live data and freeze frame information.
  2. Visual inspection: examine solenoid connector and harness for corrosion, water intrusion, broken wires, pin damage, or signs of overheating.
  3. Check battery voltage and strong ground at the solenoid connector with ignition ON; verify voltage does not drop under load.
  4. Measure coil resistance at the solenoid pins (unplugged). Compare to manufacturer specification; very high or infinite resistance = open coil; near zero = shorted coil.
  5. With connector plugged in, backprobe the control and power pins while commanding the solenoid ON using a scan tool. Verify presence of battery voltage on the supply and switching/ground or PWM on the control line.
  6. If no control signal from PCM/TCM, inspect wiring continuity from connector to module and check module driver outputs. Repair any open/shorts, replace damaged connector.
  7. If wiring and control signals are correct but solenoid does not actuate, perform a bench test (apply fused 12 V as appropriate) to confirm mechanical/coil failure and replace solenoid if required.
  8. After repairs, clear codes and perform functional test and test drive to confirm the fault does not return. If code returns despite repairs, consider module diagnosis or reprogramming per factory procedures.

Likely causes

  • Damaged or corroded connector at the solenoid
  • Failed solenoid coil
  • Broken or chafed wiring between PCM/TCM and solenoid
  • Insufficient battery voltage or poor ground

Fault status

⚠️ Status
P1712 — Lever release solenoid circuit fault detected. Electrical or functional failure of the lever release solenoid or its circuit; inspection and testing of connector, wiring, and solenoid required.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours
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Code

P1712

LAND ROVER P — Powertrain

Fault in the torque reduction request signal in the transmission

Brand: LAND ROVER
Type: P — Powertrain
Views: UK: 3 EN: 6 RU: 5
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or shorted wiring harness to the lever release solenoid
  • Corroded, loose or damaged solenoid connector
  • Failed lever release solenoid (coil or internal mechanism)
  • Poor ground or missing power supply to the solenoid
  • Intermittent connection or water ingress at connector
  • PCM/TCM driver fault (rare) or software issue

Symptoms

  • Inability to shift into or out of park/gear (shift interlock failure)
  • Transmission stuck in a single gear or limp-home mode
  • Illuminated transmission or MIL warning lamp
  • Clicking from the transmission area when shift is requested
  • Intermittent or consistent shift abnormality

What to check

  • Read and record freeze frame and live data with an appropriate scan tool
  • Visual inspection of solenoid connector and wiring for damage or corrosion
  • Check battery voltage and ground quality at the vehicle
  • Measure solenoid coil resistance with multimeter
  • Backprobe connector to verify power and control signal when activated
  • Check for related codes that may indicate wiring or PCM issues

Signal parameters

  • Key ON (engine OFF): battery supply present at solenoid power pin (~12 V)
  • When activated: control side may be switched to ground or driven by PWM — observe switching activity
  • Typical coil resistance: ~10–40 ohms (varies by model) — consult factory specs
  • Expected control signal: steady ground or PWM duty cycle when commanded; frequency and duty vary by design
  • Open-circuit or very high resistance indicates broken coil/wiring; near 0 ohms indicates short

Diagnostic algorithm

  1. Verify the DTC: clear codes and attempt to recreate the fault while monitoring live data and freeze frame information.
  2. Visual inspection: examine solenoid connector and harness for corrosion, water intrusion, broken wires, pin damage, or signs of overheating.
  3. Check battery voltage and strong ground at the solenoid connector with ignition ON; verify voltage does not drop under load.
  4. Measure coil resistance at the solenoid pins (unplugged). Compare to manufacturer specification; very high or infinite resistance = open coil; near zero = shorted coil.
  5. With connector plugged in, backprobe the control and power pins while commanding the solenoid ON using a scan tool. Verify presence of battery voltage on the supply and switching/ground or PWM on the control line.
  6. If no control signal from PCM/TCM, inspect wiring continuity from connector to module and check module driver outputs. Repair any open/shorts, replace damaged connector.
  7. If wiring and control signals are correct but solenoid does not actuate, perform a bench test (apply fused 12 V as appropriate) to confirm mechanical/coil failure and replace solenoid if required.
  8. After repairs, clear codes and perform functional test and test drive to confirm the fault does not return. If code returns despite repairs, consider module diagnosis or reprogramming per factory procedures.

Likely causes

  • Damaged or corroded connector at the solenoid
  • Failed solenoid coil
  • Broken or chafed wiring between PCM/TCM and solenoid
  • Insufficient battery voltage or poor ground

Fault status

⚠️ Status
P1712 — Lever release solenoid circuit fault detected. Electrical or functional failure of the lever release solenoid or its circuit; inspection and testing of connector, wiring, and solenoid required.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours
Workshop Manuals

Repair manuals for LAND ROVER

3

Land Rover Defender 300Tdi — Workshop Manual (1996 model year)

Workshop Manual
Defender 300Tdi Years: 1996 Manual in English 7.5 MB
Short description

Official workshop manual for the Land Rover Defender 300Tdi (from 1996 model year). Contains specifications, adjustment, fault diagnosis and step-by-step repair and overhaul procedures for engine, transmission, axles, suspension, brakes, electrical and body. Intended for dealer workshops and trained technicians.

199,00 UAH
Contents
Key sections:
  • 01 INTRODUCTION
  • 04 GENERAL SPECIFICATION DATA
  • 05 ENGINE TUNING DATA
  • 07 GENERAL FITTING REMINDERS
  • 09 LUBRICANTS, FLUIDS AND CAPACITIES
  • 10 MAINTENANCE
  • 12 ENGINE Tdi
  • - Description and operation
  • - Fault diagnosis
  • - Adjustment
  • - Repair and overhaul procedures
  • 19 FUEL SYSTEM Tdi
Buy

Land Rover Defender Workshop Manual Supplement & Body Repair Manual (1999 & 2002 MY)

Workshop Manual
Defender Years: 1999–2002 Manual in English 7.6 MB
Short description

Workshop Manual Supplement and Body Repair Manual for the Land Rover Defender. Includes general specifications, maintenance schedules, tuning data and step‑by‑step repair procedures for engine, transmission, suspension, brakes, electrical and body repairs. Covers Defender models from 1999 and 2002 model years.

199,00 UAH
Contents
Key sections:
  • 01 - INTRODUCTION
  • - Introduction
  • - Dimensions
  • - References
  • - Repairs and replacements
  • - Poisonous substances
  • - Fuel handling precautions
  • - Synthetic rubber
  • - Recommended sealants
  • - Used engine oil precautions
  • - Accessories and conversions
  • - Wheels and tyres
Buy

Land Rover Range Rover — Electrical Library (LRL 0453ENG, 2002)

Workshop Manual
Manual in English Pages: 494 7.1 MB
Short description

Land Rover Range Rover Electrical Library (LRL 0453ENG). Comprehensive manual covering fuse details, earth points, system descriptions, diagnostics and connector pin-outs for electrical troubleshooting and repair. Intended for technicians and service workshops.

199,00 UAH
Contents
Key sections:
  • 1 INTRODUCTION
  • 1.1 About this document
  • 1.2 Battery voltage
  • 1.3 Electrical precautions
  • 1.4 Battery disconnecting / charging
  • 1.5 Disciplines / greases
  • 1.6 Abbreviations
  • 1.7 HeVAC, sensors abbreviations
  • 1.8 How to use this document
  • 1.9 Connector detail format
  • 1.10 Fault diagnosis
  • 1.11 Wire colour codes
Buy
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Code

P1712

LINCOLN P — Powertrain

Trans Torque Reduction Request Signal Malfunction

Brand: LINCOLN
Type: P — Powertrain
Views: UK: 11 EN: 32 RU: 13
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or shorted wiring harness to the lever release solenoid
  • Corroded, loose or damaged solenoid connector
  • Failed lever release solenoid (coil or internal mechanism)
  • Poor ground or missing power supply to the solenoid
  • Intermittent connection or water ingress at connector
  • PCM/TCM driver fault (rare) or software issue

Symptoms

  • Inability to shift into or out of park/gear (shift interlock failure)
  • Transmission stuck in a single gear or limp-home mode
  • Illuminated transmission or MIL warning lamp
  • Clicking from the transmission area when shift is requested
  • Intermittent or consistent shift abnormality

What to check

  • Read and record freeze frame and live data with an appropriate scan tool
  • Visual inspection of solenoid connector and wiring for damage or corrosion
  • Check battery voltage and ground quality at the vehicle
  • Measure solenoid coil resistance with multimeter
  • Backprobe connector to verify power and control signal when activated
  • Check for related codes that may indicate wiring or PCM issues

Signal parameters

  • Key ON (engine OFF): battery supply present at solenoid power pin (~12 V)
  • When activated: control side may be switched to ground or driven by PWM — observe switching activity
  • Typical coil resistance: ~10–40 ohms (varies by model) — consult factory specs
  • Expected control signal: steady ground or PWM duty cycle when commanded; frequency and duty vary by design
  • Open-circuit or very high resistance indicates broken coil/wiring; near 0 ohms indicates short

Diagnostic algorithm

  1. Verify the DTC: clear codes and attempt to recreate the fault while monitoring live data and freeze frame information.
  2. Visual inspection: examine solenoid connector and harness for corrosion, water intrusion, broken wires, pin damage, or signs of overheating.
  3. Check battery voltage and strong ground at the solenoid connector with ignition ON; verify voltage does not drop under load.
  4. Measure coil resistance at the solenoid pins (unplugged). Compare to manufacturer specification; very high or infinite resistance = open coil; near zero = shorted coil.
  5. With connector plugged in, backprobe the control and power pins while commanding the solenoid ON using a scan tool. Verify presence of battery voltage on the supply and switching/ground or PWM on the control line.
  6. If no control signal from PCM/TCM, inspect wiring continuity from connector to module and check module driver outputs. Repair any open/shorts, replace damaged connector.
  7. If wiring and control signals are correct but solenoid does not actuate, perform a bench test (apply fused 12 V as appropriate) to confirm mechanical/coil failure and replace solenoid if required.
  8. After repairs, clear codes and perform functional test and test drive to confirm the fault does not return. If code returns despite repairs, consider module diagnosis or reprogramming per factory procedures.

Likely causes

  • Damaged or corroded connector at the solenoid
  • Failed solenoid coil
  • Broken or chafed wiring between PCM/TCM and solenoid
  • Insufficient battery voltage or poor ground

Fault status

⚠️ Status
P1712 — Lever release solenoid circuit fault detected. Electrical or functional failure of the lever release solenoid or its circuit; inspection and testing of connector, wiring, and solenoid required.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours
Your experience will help others
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Code

P1712

MERCURY P — Powertrain

Trans Torque Reduction Request Signal Malfunction

Brand: MERCURY
Type: P — Powertrain
Views: UK: 12 EN: 31 RU: 16
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or shorted wiring harness to the lever release solenoid
  • Corroded, loose or damaged solenoid connector
  • Failed lever release solenoid (coil or internal mechanism)
  • Poor ground or missing power supply to the solenoid
  • Intermittent connection or water ingress at connector
  • PCM/TCM driver fault (rare) or software issue

Symptoms

  • Inability to shift into or out of park/gear (shift interlock failure)
  • Transmission stuck in a single gear or limp-home mode
  • Illuminated transmission or MIL warning lamp
  • Clicking from the transmission area when shift is requested
  • Intermittent or consistent shift abnormality

What to check

  • Read and record freeze frame and live data with an appropriate scan tool
  • Visual inspection of solenoid connector and wiring for damage or corrosion
  • Check battery voltage and ground quality at the vehicle
  • Measure solenoid coil resistance with multimeter
  • Backprobe connector to verify power and control signal when activated
  • Check for related codes that may indicate wiring or PCM issues

Signal parameters

  • Key ON (engine OFF): battery supply present at solenoid power pin (~12 V)
  • When activated: control side may be switched to ground or driven by PWM — observe switching activity
  • Typical coil resistance: ~10–40 ohms (varies by model) — consult factory specs
  • Expected control signal: steady ground or PWM duty cycle when commanded; frequency and duty vary by design
  • Open-circuit or very high resistance indicates broken coil/wiring; near 0 ohms indicates short

Diagnostic algorithm

  1. Verify the DTC: clear codes and attempt to recreate the fault while monitoring live data and freeze frame information.
  2. Visual inspection: examine solenoid connector and harness for corrosion, water intrusion, broken wires, pin damage, or signs of overheating.
  3. Check battery voltage and strong ground at the solenoid connector with ignition ON; verify voltage does not drop under load.
  4. Measure coil resistance at the solenoid pins (unplugged). Compare to manufacturer specification; very high or infinite resistance = open coil; near zero = shorted coil.
  5. With connector plugged in, backprobe the control and power pins while commanding the solenoid ON using a scan tool. Verify presence of battery voltage on the supply and switching/ground or PWM on the control line.
  6. If no control signal from PCM/TCM, inspect wiring continuity from connector to module and check module driver outputs. Repair any open/shorts, replace damaged connector.
  7. If wiring and control signals are correct but solenoid does not actuate, perform a bench test (apply fused 12 V as appropriate) to confirm mechanical/coil failure and replace solenoid if required.
  8. After repairs, clear codes and perform functional test and test drive to confirm the fault does not return. If code returns despite repairs, consider module diagnosis or reprogramming per factory procedures.

Likely causes

  • Damaged or corroded connector at the solenoid
  • Failed solenoid coil
  • Broken or chafed wiring between PCM/TCM and solenoid
  • Insufficient battery voltage or poor ground

Fault status

⚠️ Status
P1712 — Lever release solenoid circuit fault detected. Electrical or functional failure of the lever release solenoid or its circuit; inspection and testing of connector, wiring, and solenoid required.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours
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Code

P1712

OPEL P — Powertrain

Front Right Wheel Speed Sensor Signal Malfunction (CAN)

Brand: OPEL
Type: P — Powertrain
Views: UK: 3 EN: 3 RU: 3
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or shorted wiring harness to the lever release solenoid
  • Corroded, loose or damaged solenoid connector
  • Failed lever release solenoid (coil or internal mechanism)
  • Poor ground or missing power supply to the solenoid
  • Intermittent connection or water ingress at connector
  • PCM/TCM driver fault (rare) or software issue

Symptoms

  • Inability to shift into or out of park/gear (shift interlock failure)
  • Transmission stuck in a single gear or limp-home mode
  • Illuminated transmission or MIL warning lamp
  • Clicking from the transmission area when shift is requested
  • Intermittent or consistent shift abnormality

What to check

  • Read and record freeze frame and live data with an appropriate scan tool
  • Visual inspection of solenoid connector and wiring for damage or corrosion
  • Check battery voltage and ground quality at the vehicle
  • Measure solenoid coil resistance with multimeter
  • Backprobe connector to verify power and control signal when activated
  • Check for related codes that may indicate wiring or PCM issues

Signal parameters

  • Key ON (engine OFF): battery supply present at solenoid power pin (~12 V)
  • When activated: control side may be switched to ground or driven by PWM — observe switching activity
  • Typical coil resistance: ~10–40 ohms (varies by model) — consult factory specs
  • Expected control signal: steady ground or PWM duty cycle when commanded; frequency and duty vary by design
  • Open-circuit or very high resistance indicates broken coil/wiring; near 0 ohms indicates short

Diagnostic algorithm

  1. Verify the DTC: clear codes and attempt to recreate the fault while monitoring live data and freeze frame information.
  2. Visual inspection: examine solenoid connector and harness for corrosion, water intrusion, broken wires, pin damage, or signs of overheating.
  3. Check battery voltage and strong ground at the solenoid connector with ignition ON; verify voltage does not drop under load.
  4. Measure coil resistance at the solenoid pins (unplugged). Compare to manufacturer specification; very high or infinite resistance = open coil; near zero = shorted coil.
  5. With connector plugged in, backprobe the control and power pins while commanding the solenoid ON using a scan tool. Verify presence of battery voltage on the supply and switching/ground or PWM on the control line.
  6. If no control signal from PCM/TCM, inspect wiring continuity from connector to module and check module driver outputs. Repair any open/shorts, replace damaged connector.
  7. If wiring and control signals are correct but solenoid does not actuate, perform a bench test (apply fused 12 V as appropriate) to confirm mechanical/coil failure and replace solenoid if required.
  8. After repairs, clear codes and perform functional test and test drive to confirm the fault does not return. If code returns despite repairs, consider module diagnosis or reprogramming per factory procedures.

Likely causes

  • Damaged or corroded connector at the solenoid
  • Failed solenoid coil
  • Broken or chafed wiring between PCM/TCM and solenoid
  • Insufficient battery voltage or poor ground

Fault status

⚠️ Status
P1712 — Lever release solenoid circuit fault detected. Electrical or functional failure of the lever release solenoid or its circuit; inspection and testing of connector, wiring, and solenoid required.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours
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Code

P1712

Other P — Powertrain

Trans Torque Reduction Request Signal Malfunction

Brand: Other
Type: P — Powertrain
Views: UK: 13 EN: 26 RU: 12
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or shorted wiring harness to the lever release solenoid
  • Corroded, loose or damaged solenoid connector
  • Failed lever release solenoid (coil or internal mechanism)
  • Poor ground or missing power supply to the solenoid
  • Intermittent connection or water ingress at connector
  • PCM/TCM driver fault (rare) or software issue

Symptoms

  • Inability to shift into or out of park/gear (shift interlock failure)
  • Transmission stuck in a single gear or limp-home mode
  • Illuminated transmission or MIL warning lamp
  • Clicking from the transmission area when shift is requested
  • Intermittent or consistent shift abnormality

What to check

  • Read and record freeze frame and live data with an appropriate scan tool
  • Visual inspection of solenoid connector and wiring for damage or corrosion
  • Check battery voltage and ground quality at the vehicle
  • Measure solenoid coil resistance with multimeter
  • Backprobe connector to verify power and control signal when activated
  • Check for related codes that may indicate wiring or PCM issues

Signal parameters

  • Key ON (engine OFF): battery supply present at solenoid power pin (~12 V)
  • When activated: control side may be switched to ground or driven by PWM — observe switching activity
  • Typical coil resistance: ~10–40 ohms (varies by model) — consult factory specs
  • Expected control signal: steady ground or PWM duty cycle when commanded; frequency and duty vary by design
  • Open-circuit or very high resistance indicates broken coil/wiring; near 0 ohms indicates short

Diagnostic algorithm

  1. Verify the DTC: clear codes and attempt to recreate the fault while monitoring live data and freeze frame information.
  2. Visual inspection: examine solenoid connector and harness for corrosion, water intrusion, broken wires, pin damage, or signs of overheating.
  3. Check battery voltage and strong ground at the solenoid connector with ignition ON; verify voltage does not drop under load.
  4. Measure coil resistance at the solenoid pins (unplugged). Compare to manufacturer specification; very high or infinite resistance = open coil; near zero = shorted coil.
  5. With connector plugged in, backprobe the control and power pins while commanding the solenoid ON using a scan tool. Verify presence of battery voltage on the supply and switching/ground or PWM on the control line.
  6. If no control signal from PCM/TCM, inspect wiring continuity from connector to module and check module driver outputs. Repair any open/shorts, replace damaged connector.
  7. If wiring and control signals are correct but solenoid does not actuate, perform a bench test (apply fused 12 V as appropriate) to confirm mechanical/coil failure and replace solenoid if required.
  8. After repairs, clear codes and perform functional test and test drive to confirm the fault does not return. If code returns despite repairs, consider module diagnosis or reprogramming per factory procedures.

Likely causes

  • Damaged or corroded connector at the solenoid
  • Failed solenoid coil
  • Broken or chafed wiring between PCM/TCM and solenoid
  • Insufficient battery voltage or poor ground

Fault status

⚠️ Status
P1712 — Lever release solenoid circuit fault detected. Electrical or functional failure of the lever release solenoid or its circuit; inspection and testing of connector, wiring, and solenoid required.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours
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Code

P1712

SUBARU P — Powertrain

Engine Torque Control Signal 2 Circuit Malfunction

Brand: SUBARU
Type: P — Powertrain
Views: UK: 16 EN: 31 RU: 16
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or shorted wiring harness to the lever release solenoid
  • Corroded, loose or damaged solenoid connector
  • Failed lever release solenoid (coil or internal mechanism)
  • Poor ground or missing power supply to the solenoid
  • Intermittent connection or water ingress at connector
  • PCM/TCM driver fault (rare) or software issue

Symptoms

  • Inability to shift into or out of park/gear (shift interlock failure)
  • Transmission stuck in a single gear or limp-home mode
  • Illuminated transmission or MIL warning lamp
  • Clicking from the transmission area when shift is requested
  • Intermittent or consistent shift abnormality

What to check

  • Read and record freeze frame and live data with an appropriate scan tool
  • Visual inspection of solenoid connector and wiring for damage or corrosion
  • Check battery voltage and ground quality at the vehicle
  • Measure solenoid coil resistance with multimeter
  • Backprobe connector to verify power and control signal when activated
  • Check for related codes that may indicate wiring or PCM issues

Signal parameters

  • Key ON (engine OFF): battery supply present at solenoid power pin (~12 V)
  • When activated: control side may be switched to ground or driven by PWM — observe switching activity
  • Typical coil resistance: ~10–40 ohms (varies by model) — consult factory specs
  • Expected control signal: steady ground or PWM duty cycle when commanded; frequency and duty vary by design
  • Open-circuit or very high resistance indicates broken coil/wiring; near 0 ohms indicates short

Diagnostic algorithm

  1. Verify the DTC: clear codes and attempt to recreate the fault while monitoring live data and freeze frame information.
  2. Visual inspection: examine solenoid connector and harness for corrosion, water intrusion, broken wires, pin damage, or signs of overheating.
  3. Check battery voltage and strong ground at the solenoid connector with ignition ON; verify voltage does not drop under load.
  4. Measure coil resistance at the solenoid pins (unplugged). Compare to manufacturer specification; very high or infinite resistance = open coil; near zero = shorted coil.
  5. With connector plugged in, backprobe the control and power pins while commanding the solenoid ON using a scan tool. Verify presence of battery voltage on the supply and switching/ground or PWM on the control line.
  6. If no control signal from PCM/TCM, inspect wiring continuity from connector to module and check module driver outputs. Repair any open/shorts, replace damaged connector.
  7. If wiring and control signals are correct but solenoid does not actuate, perform a bench test (apply fused 12 V as appropriate) to confirm mechanical/coil failure and replace solenoid if required.
  8. After repairs, clear codes and perform functional test and test drive to confirm the fault does not return. If code returns despite repairs, consider module diagnosis or reprogramming per factory procedures.

Likely causes

  • Damaged or corroded connector at the solenoid
  • Failed solenoid coil
  • Broken or chafed wiring between PCM/TCM and solenoid
  • Insufficient battery voltage or poor ground

Fault status

⚠️ Status
P1712 — Lever release solenoid circuit fault detected. Electrical or functional failure of the lever release solenoid or its circuit; inspection and testing of connector, wiring, and solenoid required.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours
Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
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