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Home / DTC / P0768 — Shift Solenoid D Electrical

P0768 — Shift Solenoid D Electrical

Detailed page for trouble code P0768.

34,405codes
59brands
11,914generic
22,491specific
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Code

P0768

Generic P — Powertrain

Shift Solenoid D Electrical

Brand: Generic
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or shorted wiring in the Shift Solenoid D circuit
  • Corroded, loose, or damaged connector or terminal at the solenoid or TCM
  • Failed Shift Solenoid D (internal coil or valve stuck)
  • Poor power or ground to the transmission harness or TCM
  • Faulty Transmission Control Module (TCM) or PCM output driver
  • Low battery/insufficient system voltage or intermittent supply

Symptoms

  • Check Engine / MIL illuminated
  • Transmission may be stuck in one gear, fail to shift, or go into limp/reduced-gear mode
  • Harsh, delayed, or erratic shifts
  • Transmission slips or does not engage some gears
  • No audible click from solenoid when commanded (vehicle-specific)

What to check

  • Read and record freeze frame and all stored DTCs with a scan tool; note related transmission codes
  • Verify battery voltage (key on and during cranking); ensure good battery/charging system
  • Inspect transmission fluid level and condition (low or contaminated fluid can affect operation)
  • Visually inspect wiring harness and connector for damage, corrosion, or loose pins at solenoid and TCM
  • Back-probe the solenoid connector and command solenoid with a scan tool active test while monitoring voltage/current
  • Measure solenoid coil resistance with an ohmmeter (compare to specification)

Signal parameters

  • Coil resistance: vehicle-specific (typical range ~6–30 Ω) — consult service data for exact spec
  • Command voltage: pulsed output from TCM, peak near battery voltage when commanded (duty-cycle/PWM style control common)
  • Typical PWM frequency/duty: variable by manufacturer (tens to low hundreds of Hz); duty cycle controls valve position
  • Current draw: approximate 0.5–2 A when activated (varies by design)
  • Idle/key-on no-command voltage: near 0 V on PCM-driven side; power feed typically battery voltage
  • Expected continuity: low resistance between solenoid ground and chassis ground (subject to circuit design)

Diagnostic algorithm

  1. Verify the code: connect scan tool, record P0768 and any related codes, then clear codes and attempt to reproduce.
  2. Check basic power/ground: confirm battery voltage at vehicle battery and fuses/relays feeding TCM and transmission harness.
  3. Visual inspection: inspect harness and connector at Shift Solenoid D and TCM for damage, corrosion, or loose pins; repair as needed.
  4. Measure coil resistance: disconnect solenoid connector and measure ohms across solenoid terminals; compare to service spec. Open or short indicates bad solenoid or harness.
  5. Back-probe while commanding: with a scan tool, command Shift Solenoid D ON/OFF and measure voltage waveform and continuity at the connector; listen for a click or observe change in current.
  6. Wiggle/test for intermittents: wiggle harness and connectors while monitoring live data and voltage/current for intermittent faults.
  7. Check grounds and return paths: verify low-resistance ground between transmission harness ground and chassis/TCM ground.
  8. Isolate solenoid: if wiring and connectors test OK, bench-test or swap with known-good solenoid (if possible) to confirm operation; replace solenoid if failed.
  9. Verify TCM output: if solenoid and wiring are good but no proper command signal, inspect/replace or reprogram TCM per manufacturer guidance.
  10. Final check: clear codes, perform road test and re-scan to confirm fault does not return. If intermittent, consider harness repair/repinning or TCM replacement after ruling out wiring and solenoid.

Likely causes

  • Broken wire or pinched harness to solenoid D
  • Bad connector (corrosion, bent pins, poor contact)
  • Solenoid coil open or shorted
  • Faulty TCM output driver for solenoid D
  • Intermittent ground or fused power feed to transmission

Fault status

⚠️ Status
P0768 - Shift Solenoid D Electrical: TCM detected electrical fault in circuit for Shift Solenoid D (open, short, or driver fault).
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2 hours

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Code

P0768

GWM P — Powertrain

- Damage to the electrical circuit of the solenoid switch D

Brand: GWM
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or shorted wiring in the Shift Solenoid D circuit
  • Corroded, loose, or damaged connector or terminal at the solenoid or TCM
  • Failed Shift Solenoid D (internal coil or valve stuck)
  • Poor power or ground to the transmission harness or TCM
  • Faulty Transmission Control Module (TCM) or PCM output driver
  • Low battery/insufficient system voltage or intermittent supply

Symptoms

  • Check Engine / MIL illuminated
  • Transmission may be stuck in one gear, fail to shift, or go into limp/reduced-gear mode
  • Harsh, delayed, or erratic shifts
  • Transmission slips or does not engage some gears
  • No audible click from solenoid when commanded (vehicle-specific)

What to check

  • Read and record freeze frame and all stored DTCs with a scan tool; note related transmission codes
  • Verify battery voltage (key on and during cranking); ensure good battery/charging system
  • Inspect transmission fluid level and condition (low or contaminated fluid can affect operation)
  • Visually inspect wiring harness and connector for damage, corrosion, or loose pins at solenoid and TCM
  • Back-probe the solenoid connector and command solenoid with a scan tool active test while monitoring voltage/current
  • Measure solenoid coil resistance with an ohmmeter (compare to specification)

Signal parameters

  • Coil resistance: vehicle-specific (typical range ~6–30 Ω) — consult service data for exact spec
  • Command voltage: pulsed output from TCM, peak near battery voltage when commanded (duty-cycle/PWM style control common)
  • Typical PWM frequency/duty: variable by manufacturer (tens to low hundreds of Hz); duty cycle controls valve position
  • Current draw: approximate 0.5–2 A when activated (varies by design)
  • Idle/key-on no-command voltage: near 0 V on PCM-driven side; power feed typically battery voltage
  • Expected continuity: low resistance between solenoid ground and chassis ground (subject to circuit design)

Diagnostic algorithm

  1. Verify the code: connect scan tool, record P0768 and any related codes, then clear codes and attempt to reproduce.
  2. Check basic power/ground: confirm battery voltage at vehicle battery and fuses/relays feeding TCM and transmission harness.
  3. Visual inspection: inspect harness and connector at Shift Solenoid D and TCM for damage, corrosion, or loose pins; repair as needed.
  4. Measure coil resistance: disconnect solenoid connector and measure ohms across solenoid terminals; compare to service spec. Open or short indicates bad solenoid or harness.
  5. Back-probe while commanding: with a scan tool, command Shift Solenoid D ON/OFF and measure voltage waveform and continuity at the connector; listen for a click or observe change in current.
  6. Wiggle/test for intermittents: wiggle harness and connectors while monitoring live data and voltage/current for intermittent faults.
  7. Check grounds and return paths: verify low-resistance ground between transmission harness ground and chassis/TCM ground.
  8. Isolate solenoid: if wiring and connectors test OK, bench-test or swap with known-good solenoid (if possible) to confirm operation; replace solenoid if failed.
  9. Verify TCM output: if solenoid and wiring are good but no proper command signal, inspect/replace or reprogram TCM per manufacturer guidance.
  10. Final check: clear codes, perform road test and re-scan to confirm fault does not return. If intermittent, consider harness repair/repinning or TCM replacement after ruling out wiring and solenoid.

Likely causes

  • Broken wire or pinched harness to solenoid D
  • Bad connector (corrosion, bent pins, poor contact)
  • Solenoid coil open or shorted
  • Faulty TCM output driver for solenoid D
  • Intermittent ground or fused power feed to transmission

Fault status

⚠️ Status
P0768 - Shift Solenoid D Electrical: TCM detected electrical fault in circuit for Shift Solenoid D (open, short, or driver fault).
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2 hours

Similar codes

P0753 P0758 P0763 P0769 P0700
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Code

P0768

HUMMER P — Powertrain

Shift Solenoid D Electrical

Brand: HUMMER
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or shorted wiring in the Shift Solenoid D circuit
  • Corroded, loose, or damaged connector or terminal at the solenoid or TCM
  • Failed Shift Solenoid D (internal coil or valve stuck)
  • Poor power or ground to the transmission harness or TCM
  • Faulty Transmission Control Module (TCM) or PCM output driver
  • Low battery/insufficient system voltage or intermittent supply

Symptoms

  • Check Engine / MIL illuminated
  • Transmission may be stuck in one gear, fail to shift, or go into limp/reduced-gear mode
  • Harsh, delayed, or erratic shifts
  • Transmission slips or does not engage some gears
  • No audible click from solenoid when commanded (vehicle-specific)

What to check

  • Read and record freeze frame and all stored DTCs with a scan tool; note related transmission codes
  • Verify battery voltage (key on and during cranking); ensure good battery/charging system
  • Inspect transmission fluid level and condition (low or contaminated fluid can affect operation)
  • Visually inspect wiring harness and connector for damage, corrosion, or loose pins at solenoid and TCM
  • Back-probe the solenoid connector and command solenoid with a scan tool active test while monitoring voltage/current
  • Measure solenoid coil resistance with an ohmmeter (compare to specification)

Signal parameters

  • Coil resistance: vehicle-specific (typical range ~6–30 Ω) — consult service data for exact spec
  • Command voltage: pulsed output from TCM, peak near battery voltage when commanded (duty-cycle/PWM style control common)
  • Typical PWM frequency/duty: variable by manufacturer (tens to low hundreds of Hz); duty cycle controls valve position
  • Current draw: approximate 0.5–2 A when activated (varies by design)
  • Idle/key-on no-command voltage: near 0 V on PCM-driven side; power feed typically battery voltage
  • Expected continuity: low resistance between solenoid ground and chassis ground (subject to circuit design)

Diagnostic algorithm

  1. Verify the code: connect scan tool, record P0768 and any related codes, then clear codes and attempt to reproduce.
  2. Check basic power/ground: confirm battery voltage at vehicle battery and fuses/relays feeding TCM and transmission harness.
  3. Visual inspection: inspect harness and connector at Shift Solenoid D and TCM for damage, corrosion, or loose pins; repair as needed.
  4. Measure coil resistance: disconnect solenoid connector and measure ohms across solenoid terminals; compare to service spec. Open or short indicates bad solenoid or harness.
  5. Back-probe while commanding: with a scan tool, command Shift Solenoid D ON/OFF and measure voltage waveform and continuity at the connector; listen for a click or observe change in current.
  6. Wiggle/test for intermittents: wiggle harness and connectors while monitoring live data and voltage/current for intermittent faults.
  7. Check grounds and return paths: verify low-resistance ground between transmission harness ground and chassis/TCM ground.
  8. Isolate solenoid: if wiring and connectors test OK, bench-test or swap with known-good solenoid (if possible) to confirm operation; replace solenoid if failed.
  9. Verify TCM output: if solenoid and wiring are good but no proper command signal, inspect/replace or reprogram TCM per manufacturer guidance.
  10. Final check: clear codes, perform road test and re-scan to confirm fault does not return. If intermittent, consider harness repair/repinning or TCM replacement after ruling out wiring and solenoid.

Likely causes

  • Broken wire or pinched harness to solenoid D
  • Bad connector (corrosion, bent pins, poor contact)
  • Solenoid coil open or shorted
  • Faulty TCM output driver for solenoid D
  • Intermittent ground or fused power feed to transmission

Fault status

⚠️ Status
P0768 - Shift Solenoid D Electrical: TCM detected electrical fault in circuit for Shift Solenoid D (open, short, or driver fault).
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2 hours

Similar codes

P0753 P0758 P0763 P0769 P0700
Repair manuals

Manual library for HUMMER

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Code

P0768

LAND ROVER P — Powertrain

Shift solenoid D0

Brand: LAND ROVER
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or shorted wiring in the Shift Solenoid D circuit
  • Corroded, loose, or damaged connector or terminal at the solenoid or TCM
  • Failed Shift Solenoid D (internal coil or valve stuck)
  • Poor power or ground to the transmission harness or TCM
  • Faulty Transmission Control Module (TCM) or PCM output driver
  • Low battery/insufficient system voltage or intermittent supply

Symptoms

  • Check Engine / MIL illuminated
  • Transmission may be stuck in one gear, fail to shift, or go into limp/reduced-gear mode
  • Harsh, delayed, or erratic shifts
  • Transmission slips or does not engage some gears
  • No audible click from solenoid when commanded (vehicle-specific)

What to check

  • Read and record freeze frame and all stored DTCs with a scan tool; note related transmission codes
  • Verify battery voltage (key on and during cranking); ensure good battery/charging system
  • Inspect transmission fluid level and condition (low or contaminated fluid can affect operation)
  • Visually inspect wiring harness and connector for damage, corrosion, or loose pins at solenoid and TCM
  • Back-probe the solenoid connector and command solenoid with a scan tool active test while monitoring voltage/current
  • Measure solenoid coil resistance with an ohmmeter (compare to specification)

Signal parameters

  • Coil resistance: vehicle-specific (typical range ~6–30 Ω) — consult service data for exact spec
  • Command voltage: pulsed output from TCM, peak near battery voltage when commanded (duty-cycle/PWM style control common)
  • Typical PWM frequency/duty: variable by manufacturer (tens to low hundreds of Hz); duty cycle controls valve position
  • Current draw: approximate 0.5–2 A when activated (varies by design)
  • Idle/key-on no-command voltage: near 0 V on PCM-driven side; power feed typically battery voltage
  • Expected continuity: low resistance between solenoid ground and chassis ground (subject to circuit design)

Diagnostic algorithm

  1. Verify the code: connect scan tool, record P0768 and any related codes, then clear codes and attempt to reproduce.
  2. Check basic power/ground: confirm battery voltage at vehicle battery and fuses/relays feeding TCM and transmission harness.
  3. Visual inspection: inspect harness and connector at Shift Solenoid D and TCM for damage, corrosion, or loose pins; repair as needed.
  4. Measure coil resistance: disconnect solenoid connector and measure ohms across solenoid terminals; compare to service spec. Open or short indicates bad solenoid or harness.
  5. Back-probe while commanding: with a scan tool, command Shift Solenoid D ON/OFF and measure voltage waveform and continuity at the connector; listen for a click or observe change in current.
  6. Wiggle/test for intermittents: wiggle harness and connectors while monitoring live data and voltage/current for intermittent faults.
  7. Check grounds and return paths: verify low-resistance ground between transmission harness ground and chassis/TCM ground.
  8. Isolate solenoid: if wiring and connectors test OK, bench-test or swap with known-good solenoid (if possible) to confirm operation; replace solenoid if failed.
  9. Verify TCM output: if solenoid and wiring are good but no proper command signal, inspect/replace or reprogram TCM per manufacturer guidance.
  10. Final check: clear codes, perform road test and re-scan to confirm fault does not return. If intermittent, consider harness repair/repinning or TCM replacement after ruling out wiring and solenoid.

Likely causes

  • Broken wire or pinched harness to solenoid D
  • Bad connector (corrosion, bent pins, poor contact)
  • Solenoid coil open or shorted
  • Faulty TCM output driver for solenoid D
  • Intermittent ground or fused power feed to transmission

Fault status

⚠️ Status
P0768 - Shift Solenoid D Electrical: TCM detected electrical fault in circuit for Shift Solenoid D (open, short, or driver fault).
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2 hours

Similar codes

P0753 P0758 P0763 P0769 P0700
413

Browse 413 LAND ROVER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

LAND ROVER

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Code

P0768

MERCEDES-BENZ P — Powertrain

Shift Solenoid D Electrical

Brand: MERCEDES-BENZ
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or shorted wiring in the Shift Solenoid D circuit
  • Corroded, loose, or damaged connector or terminal at the solenoid or TCM
  • Failed Shift Solenoid D (internal coil or valve stuck)
  • Poor power or ground to the transmission harness or TCM
  • Faulty Transmission Control Module (TCM) or PCM output driver
  • Low battery/insufficient system voltage or intermittent supply

Symptoms

  • Check Engine / MIL illuminated
  • Transmission may be stuck in one gear, fail to shift, or go into limp/reduced-gear mode
  • Harsh, delayed, or erratic shifts
  • Transmission slips or does not engage some gears
  • No audible click from solenoid when commanded (vehicle-specific)

What to check

  • Read and record freeze frame and all stored DTCs with a scan tool; note related transmission codes
  • Verify battery voltage (key on and during cranking); ensure good battery/charging system
  • Inspect transmission fluid level and condition (low or contaminated fluid can affect operation)
  • Visually inspect wiring harness and connector for damage, corrosion, or loose pins at solenoid and TCM
  • Back-probe the solenoid connector and command solenoid with a scan tool active test while monitoring voltage/current
  • Measure solenoid coil resistance with an ohmmeter (compare to specification)

Signal parameters

  • Coil resistance: vehicle-specific (typical range ~6–30 Ω) — consult service data for exact spec
  • Command voltage: pulsed output from TCM, peak near battery voltage when commanded (duty-cycle/PWM style control common)
  • Typical PWM frequency/duty: variable by manufacturer (tens to low hundreds of Hz); duty cycle controls valve position
  • Current draw: approximate 0.5–2 A when activated (varies by design)
  • Idle/key-on no-command voltage: near 0 V on PCM-driven side; power feed typically battery voltage
  • Expected continuity: low resistance between solenoid ground and chassis ground (subject to circuit design)

Diagnostic algorithm

  1. Verify the code: connect scan tool, record P0768 and any related codes, then clear codes and attempt to reproduce.
  2. Check basic power/ground: confirm battery voltage at vehicle battery and fuses/relays feeding TCM and transmission harness.
  3. Visual inspection: inspect harness and connector at Shift Solenoid D and TCM for damage, corrosion, or loose pins; repair as needed.
  4. Measure coil resistance: disconnect solenoid connector and measure ohms across solenoid terminals; compare to service spec. Open or short indicates bad solenoid or harness.
  5. Back-probe while commanding: with a scan tool, command Shift Solenoid D ON/OFF and measure voltage waveform and continuity at the connector; listen for a click or observe change in current.
  6. Wiggle/test for intermittents: wiggle harness and connectors while monitoring live data and voltage/current for intermittent faults.
  7. Check grounds and return paths: verify low-resistance ground between transmission harness ground and chassis/TCM ground.
  8. Isolate solenoid: if wiring and connectors test OK, bench-test or swap with known-good solenoid (if possible) to confirm operation; replace solenoid if failed.
  9. Verify TCM output: if solenoid and wiring are good but no proper command signal, inspect/replace or reprogram TCM per manufacturer guidance.
  10. Final check: clear codes, perform road test and re-scan to confirm fault does not return. If intermittent, consider harness repair/repinning or TCM replacement after ruling out wiring and solenoid.

Likely causes

  • Broken wire or pinched harness to solenoid D
  • Bad connector (corrosion, bent pins, poor contact)
  • Solenoid coil open or shorted
  • Faulty TCM output driver for solenoid D
  • Intermittent ground or fused power feed to transmission

Fault status

⚠️ Status
P0768 - Shift Solenoid D Electrical: TCM detected electrical fault in circuit for Shift Solenoid D (open, short, or driver fault).
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2 hours

Similar codes

P0753 P0758 P0763 P0769 P0700
856

Browse 856 MERCEDES-BENZ manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

MERCEDES-BENZ

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Code

P0768

MITSUBISHI P — Powertrain

OD solenoid

Brand: MITSUBISHI
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or shorted wiring in the Shift Solenoid D circuit
  • Corroded, loose, or damaged connector or terminal at the solenoid or TCM
  • Failed Shift Solenoid D (internal coil or valve stuck)
  • Poor power or ground to the transmission harness or TCM
  • Faulty Transmission Control Module (TCM) or PCM output driver
  • Low battery/insufficient system voltage or intermittent supply

Symptoms

  • Check Engine / MIL illuminated
  • Transmission may be stuck in one gear, fail to shift, or go into limp/reduced-gear mode
  • Harsh, delayed, or erratic shifts
  • Transmission slips or does not engage some gears
  • No audible click from solenoid when commanded (vehicle-specific)

What to check

  • Read and record freeze frame and all stored DTCs with a scan tool; note related transmission codes
  • Verify battery voltage (key on and during cranking); ensure good battery/charging system
  • Inspect transmission fluid level and condition (low or contaminated fluid can affect operation)
  • Visually inspect wiring harness and connector for damage, corrosion, or loose pins at solenoid and TCM
  • Back-probe the solenoid connector and command solenoid with a scan tool active test while monitoring voltage/current
  • Measure solenoid coil resistance with an ohmmeter (compare to specification)

Signal parameters

  • Coil resistance: vehicle-specific (typical range ~6–30 Ω) — consult service data for exact spec
  • Command voltage: pulsed output from TCM, peak near battery voltage when commanded (duty-cycle/PWM style control common)
  • Typical PWM frequency/duty: variable by manufacturer (tens to low hundreds of Hz); duty cycle controls valve position
  • Current draw: approximate 0.5–2 A when activated (varies by design)
  • Idle/key-on no-command voltage: near 0 V on PCM-driven side; power feed typically battery voltage
  • Expected continuity: low resistance between solenoid ground and chassis ground (subject to circuit design)

Diagnostic algorithm

  1. Verify the code: connect scan tool, record P0768 and any related codes, then clear codes and attempt to reproduce.
  2. Check basic power/ground: confirm battery voltage at vehicle battery and fuses/relays feeding TCM and transmission harness.
  3. Visual inspection: inspect harness and connector at Shift Solenoid D and TCM for damage, corrosion, or loose pins; repair as needed.
  4. Measure coil resistance: disconnect solenoid connector and measure ohms across solenoid terminals; compare to service spec. Open or short indicates bad solenoid or harness.
  5. Back-probe while commanding: with a scan tool, command Shift Solenoid D ON/OFF and measure voltage waveform and continuity at the connector; listen for a click or observe change in current.
  6. Wiggle/test for intermittents: wiggle harness and connectors while monitoring live data and voltage/current for intermittent faults.
  7. Check grounds and return paths: verify low-resistance ground between transmission harness ground and chassis/TCM ground.
  8. Isolate solenoid: if wiring and connectors test OK, bench-test or swap with known-good solenoid (if possible) to confirm operation; replace solenoid if failed.
  9. Verify TCM output: if solenoid and wiring are good but no proper command signal, inspect/replace or reprogram TCM per manufacturer guidance.
  10. Final check: clear codes, perform road test and re-scan to confirm fault does not return. If intermittent, consider harness repair/repinning or TCM replacement after ruling out wiring and solenoid.

Likely causes

  • Broken wire or pinched harness to solenoid D
  • Bad connector (corrosion, bent pins, poor contact)
  • Solenoid coil open or shorted
  • Faulty TCM output driver for solenoid D
  • Intermittent ground or fused power feed to transmission

Fault status

⚠️ Status
P0768 - Shift Solenoid D Electrical: TCM detected electrical fault in circuit for Shift Solenoid D (open, short, or driver fault).
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2 hours

Similar codes

P0753 P0758 P0763 P0769 P0700
406

Browse 406 MITSUBISHI manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

MITSUBISHI

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+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
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