P0765

Code

GWM P — Powertrain

- Solenoid switch D fault

Brand: GWM

Type: P — Powertrain

Views: UK: 10 EN: 20 RU: 13

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Page language: EN

Causes

Failed shift solenoid D (stuck, open, short, or intermittent)
Open, shorted or damaged wiring/harness to solenoid D
Poor or corroded connector/pins at solenoid or PCM
Low, dirty, or contaminated transmission fluid affecting valve operation
Faulty transmission valve body or internal hydraulic fault
PCM / TCM driver transistor fault or software issue

Symptoms

Check Engine Light / Transmission MIL illuminated
Transmission stuck in a single gear or in limp/backup mode
Harsh, delayed, erratic, or missing up/down shifts
Poor drivability or reduced acceleration
Possible transmission overheating if left unresolved

What to check

Read and record freeze-frame and all stored transmission codes with a capable scanner
Check transmission fluid level and condition (color, smell, debris)
Visual inspection of solenoid connector, pins, and wiring for corrosion, looseness, damage
Backprobe solenoid connector and verify supply voltage and ground while key ON/engine running
Measure solenoid D coil resistance at the connector (compare to spec)
Perform active test/command of solenoid D with scan tool and observe operation

Signal parameters

Typical solenoid coil resistance: commonly ~5–40 ohms (refer to GWM spec for exact value)
Supply voltage at connector (key ON): approximately battery voltage (~12 V)
Switching: PCM typically drives solenoid by grounding; measured switched voltage will toggle between ~0–12 V when commanded
Command duty cycle (if PWM driven): 0–100% depending on shift request
When commanded ON, coil continuity should be present and resistance within spec; an open or very high resistance indicates wiring/coil fault

Diagnostic algorithm

Retrieve freeze-frame data and additional DTCs; note operating conditions when code set.
Visually inspect transmission fluid level/condition; top up or replace if severely contaminated.
Visually inspect wiring and connectors for damage, corrosion, or loose pins at solenoid and PCM/TCM.
With ignition on (engine off) measure coil resistance at the solenoid connector; compare to GWM specification. Replace solenoid if out of range.
Backprobe connector and check for battery voltage on supply terminal and good ground on return. Repair wiring or connector issues as needed.
Use a scan tool to command solenoid D ON/OFF; verify the solenoid/valve responds (listen for click, monitor pressure/shift behavior, monitor commanded status).
If solenoid does not respond electrically but wiring and voltage are good, replace the solenoid or valve body assembly as required.
If solenoid and wiring test good but code returns, suspect PCM/TCM driver fault; verify other outputs and grounds before replacing control module.
After repairs clear codes and perform road test under varied conditions to confirm repair; re-scan for reappearance of code.

Likely causes

Solenoid D coil has failed (most common)
Wiring chafe or connector corrosion causing intermittent/open circuit
Contaminated valve body causing solenoid valve to stick
Loss of ground or supply to the solenoid circuit
PCM/TCM output stage fault (less common)

Fault status

⚠️ Status

P0765 — Shift Solenoid D (Solenoid Switch D) fault: circuit performance/electrical error. Inspect solenoid D, wiring/connectors, transmission fluid and valve body; verify PCM output.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1-3 hours

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P0765 — - Solenoid switch D fault