P0787
PowertrainTransmission Solenoidmoderate severityShift/Timing Solenoid Low
What P0787 Means
The shift or timing solenoid circuit voltage is reading lower than expected. This often indicates a short to ground or wiring fault.
Symptoms
- Erratic shifting
- No shift in certain gears
- Check engine light on
Common Causes
- Short to ground in wiring
- Failed solenoid
- Poor connector contact
- Faulty valve body
Diagnostic Steps
- Inspect wiring for shorts to ground
- Scan for related codes
- Measure solenoid circuit voltage and resistance
- Test valve body operation
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