Code
P0768
Generic
P — Powertrain
Shift Solenoid D Electrical
Views:
UK: 24
EN: 37
RU: 27
AI status
Completed
Completed
100%
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
- Verify the code: connect scan tool, record P0768 and any related codes, then clear codes and attempt to reproduce.
- Check basic power/ground: confirm battery voltage at vehicle battery and fuses/relays feeding TCM and transmission harness.
- Visual inspection: inspect harness and connector at Shift Solenoid D and TCM for damage, corrosion, or loose pins; repair as needed.
- Measure coil resistance: disconnect solenoid connector and measure ohms across solenoid terminals; compare to service spec. Open or short indicates bad solenoid or harness.
- 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.
- Wiggle/test for intermittents: wiggle harness and connectors while monitoring live data and voltage/current for intermittent faults.
- Check grounds and return paths: verify low-resistance ground between transmission harness ground and chassis/TCM ground.
- 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.
- Verify TCM output: if solenoid and wiring are good but no proper command signal, inspect/replace or reprogram TCM per manufacturer guidance.
- 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
Views:
UK: 3
EN: 2
RU: 1
AI status
Completed
Completed
100%
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
- Verify the code: connect scan tool, record P0768 and any related codes, then clear codes and attempt to reproduce.
- Check basic power/ground: confirm battery voltage at vehicle battery and fuses/relays feeding TCM and transmission harness.
- Visual inspection: inspect harness and connector at Shift Solenoid D and TCM for damage, corrosion, or loose pins; repair as needed.
- Measure coil resistance: disconnect solenoid connector and measure ohms across solenoid terminals; compare to service spec. Open or short indicates bad solenoid or harness.
- 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.
- Wiggle/test for intermittents: wiggle harness and connectors while monitoring live data and voltage/current for intermittent faults.
- Check grounds and return paths: verify low-resistance ground between transmission harness ground and chassis/TCM ground.
- 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.
- Verify TCM output: if solenoid and wiring are good but no proper command signal, inspect/replace or reprogram TCM per manufacturer guidance.
- 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
HUMMER
P — Powertrain
Shift Solenoid D Electrical
Views:
UK: 9
EN: 14
RU: 9
AI status
Completed
Completed
100%
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
- Verify the code: connect scan tool, record P0768 and any related codes, then clear codes and attempt to reproduce.
- Check basic power/ground: confirm battery voltage at vehicle battery and fuses/relays feeding TCM and transmission harness.
- Visual inspection: inspect harness and connector at Shift Solenoid D and TCM for damage, corrosion, or loose pins; repair as needed.
- Measure coil resistance: disconnect solenoid connector and measure ohms across solenoid terminals; compare to service spec. Open or short indicates bad solenoid or harness.
- 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.
- Wiggle/test for intermittents: wiggle harness and connectors while monitoring live data and voltage/current for intermittent faults.
- Check grounds and return paths: verify low-resistance ground between transmission harness ground and chassis/TCM ground.
- 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.
- Verify TCM output: if solenoid and wiring are good but no proper command signal, inspect/replace or reprogram TCM per manufacturer guidance.
- 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
LAND ROVER
P — Powertrain
Shift solenoid D0
Views:
UK: 10
EN: 11
RU: 6
AI status
Completed
Completed
100%
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
- Verify the code: connect scan tool, record P0768 and any related codes, then clear codes and attempt to reproduce.
- Check basic power/ground: confirm battery voltage at vehicle battery and fuses/relays feeding TCM and transmission harness.
- Visual inspection: inspect harness and connector at Shift Solenoid D and TCM for damage, corrosion, or loose pins; repair as needed.
- Measure coil resistance: disconnect solenoid connector and measure ohms across solenoid terminals; compare to service spec. Open or short indicates bad solenoid or harness.
- 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.
- Wiggle/test for intermittents: wiggle harness and connectors while monitoring live data and voltage/current for intermittent faults.
- Check grounds and return paths: verify low-resistance ground between transmission harness ground and chassis/TCM ground.
- 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.
- Verify TCM output: if solenoid and wiring are good but no proper command signal, inspect/replace or reprogram TCM per manufacturer guidance.
- 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
MERCEDES-BENZ
P — Powertrain
Shift Solenoid D Electrical
Views:
UK: 16
EN: 21
RU: 14
AI status
Completed
Completed
100%
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
- Verify the code: connect scan tool, record P0768 and any related codes, then clear codes and attempt to reproduce.
- Check basic power/ground: confirm battery voltage at vehicle battery and fuses/relays feeding TCM and transmission harness.
- Visual inspection: inspect harness and connector at Shift Solenoid D and TCM for damage, corrosion, or loose pins; repair as needed.
- Measure coil resistance: disconnect solenoid connector and measure ohms across solenoid terminals; compare to service spec. Open or short indicates bad solenoid or harness.
- 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.
- Wiggle/test for intermittents: wiggle harness and connectors while monitoring live data and voltage/current for intermittent faults.
- Check grounds and return paths: verify low-resistance ground between transmission harness ground and chassis/TCM ground.
- 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.
- Verify TCM output: if solenoid and wiring are good but no proper command signal, inspect/replace or reprogram TCM per manufacturer guidance.
- 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
MITSUBISHI
P — Powertrain
OD solenoid
Views:
UK: 9
EN: 13
RU: 7
AI status
Completed
Completed
100%
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
- Verify the code: connect scan tool, record P0768 and any related codes, then clear codes and attempt to reproduce.
- Check basic power/ground: confirm battery voltage at vehicle battery and fuses/relays feeding TCM and transmission harness.
- Visual inspection: inspect harness and connector at Shift Solenoid D and TCM for damage, corrosion, or loose pins; repair as needed.
- Measure coil resistance: disconnect solenoid connector and measure ohms across solenoid terminals; compare to service spec. Open or short indicates bad solenoid or harness.
- 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.
- Wiggle/test for intermittents: wiggle harness and connectors while monitoring live data and voltage/current for intermittent faults.
- Check grounds and return paths: verify low-resistance ground between transmission harness ground and chassis/TCM ground.
- 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.
- Verify TCM output: if solenoid and wiring are good but no proper command signal, inspect/replace or reprogram TCM per manufacturer guidance.
- 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
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