p0787 shift timing solenoid low
P0787 Shift Timing Solenoid Low
Definition: The OBD2 code P0787 indicates a problem with the shift timing solenoid, specifically that it is operating at a lower level than expected. This can affect the transmission’s ability to shift gears properly.
P0787 – Shift Timing Solenoid Low
Severity: Moderate
Common Causes
P0787 Shift Timing Solenoid Low
Description: The PCM has detected an abnormal voltage level from the shift timing solenoid circuit.
Common Causes:
- Faulty shift timing solenoid
- Open or short in the wiring harness connected to the shift timing solenoid
- Corroded or poor electrical connection at the shift timing solenoid
- Low transmission fluid level or contaminated fluid
- Internal transmission mechanical issues
Common Misdiagnosis
OBD2 Code: P0787
Description: Shift Timing Solenoid Low
Common Misdiagnosis: Replacing the shift solenoid without checking for wiring issues or transmission fluid problems.
Common Diagnostic Steps
OBD2 Code: P0787
Description: Shift Timing Solenoid Low
Common Diagnostic Steps:
- Check the transmission fluid level and condition. Ensure it is at the correct level and not contaminated.
- Inspect the wiring and connectors to the shift timing solenoid for any signs of damage, corrosion, or disconnection.
- Test the shift timing solenoid using a multimeter to ensure it has proper resistance and is functioning correctly.
- Use an OBD2 scanner to clear the code and perform a test drive to see if the code returns.
- If applicable, update or reprogram the vehicle’s Powertrain Control Module (PCM) with the latest software updates from the manufacturer.
- If all else fails, consider replacing the shift timing solenoid if it is found to be faulty after testing.