P0789
Shift Timing Solenoid A Intermittent
P0789 is an OBD-II diagnostic trouble code meaning: Shift Timing Solenoid A Intermittent. Common causes: shift solenoid malfunction, problems with wiring or connectors. Estimated repair cost: $17–89.
Symptoms
- Delays when shifting gears
- Jerks when switching
- Transmission of the gearbox into emergency mode
- Increased speed before shifting
- Check Engine Light Illuminates
Causes
- Shift solenoid malfunction
- Problems with wiring or connectors
- Low or contaminated transmission fluid
- Malfunction of the transmission control unit
- Mechanical problems in the gearbox
How to Fix
- Check the level and condition of the transmission fluid
- Diagnose the electrical circuit of the solenoid
- Check solenoid resistance
- If necessary, replace the solenoid
- Flash the transmission control unit (if necessary)
Related codes
Error P0789 by Vehicle Brand
FAQ
What does the P0789 code mean?
P0789 is an OBD-II diagnostic trouble code that indicates: Shift Timing Solenoid A Intermittent
What causes a P0789 error code?
The most common causes of P0789 include: Shift solenoid malfunction; Problems with wiring or connectors; Low or contaminated transmission fluid; Malfunction of the transmission control unit.
How do I fix a P0789 diagnostic trouble code?
To fix P0789: Check the level and condition of the transmission fluid. Diagnose the electrical circuit of the solenoid. Check solenoid resistance. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0789?
Limited driving only, diagnose soon
How much does it cost to fix P0789?
The estimated repair cost for P0789 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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