P078D
Shift Timing Solenoid B High
P078D is an OBD-II diagnostic trouble code meaning: Shift Timing Solenoid B High. Common causes: shift solenoid b malfunction, open or short circuit in solenoid circuit. Estimated repair cost: $17–56.
Symptoms
- Hard or abrupt gear shifts
- Delays when shifting gears
- Transmission transition to emergency mode
- Increased fuel consumption
- Check Engine Light Illuminates
Causes
- Shift Solenoid B Malfunction
- Open or short circuit in solenoid circuit
- Poor contact in electrical wiring connectors
- Transmission control module (TCM) malfunction
- Problems with power or grounding of the circuit
How to Fix
- Check resistance of shift solenoid B
- Inspect the wiring harness and connectors for damage.
- Check voltage and continuity of solenoid control circuit
- Replace shift solenoid B if necessary
- Scan the TCM for additional errors
Related codes
Error P078D by Vehicle Brand
FAQ
What does the P078D code mean?
P078D is an OBD-II diagnostic trouble code that indicates: Shift Timing Solenoid B High
What causes a P078D error code?
The most common causes of P078D include: Shift Solenoid B Malfunction; Open or short circuit in solenoid circuit; Poor contact in electrical wiring connectors; Transmission control module (TCM) malfunction.
How do I fix a P078D diagnostic trouble code?
To fix P078D: Check resistance of shift solenoid B. Inspect the wiring harness and connectors for damage.. Check voltage and continuity of solenoid control circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P078D?
Yes, but get it checked soon
How much does it cost to fix P078D?
The estimated repair cost for P078D is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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