P078B
Shift Timing Solenoid B Range/Performance
P078B is an OBD-II diagnostic trouble code meaning: Shift Timing Solenoid B Range/Performance. Common causes: shift solenoid b malfunction, solenoid circuit problems. Estimated repair cost: $17–67.
Symptoms
- Incorrect gear shifting
- Delays when shifting gears
- Jerks when switching
- Switching to emergency mode of the gearbox
- Increased fuel consumption
Causes
- Shift Solenoid B Malfunction
- Solenoid circuit problems
- Low or contaminated transmission fluid
- Mechanical problems in the gearbox
- Transmission control module (TCM) malfunction
How to Fix
- Check the level and condition of the transmission fluid
- Diagnose the electrical circuit of the solenoid
- Check resistance and operation of solenoid B
- Replace solenoid B if necessary
- Reset transmission adaptations after repair
Related codes
Error P078B by Vehicle Brand
FAQ
What does the P078B code mean?
P078B is an OBD-II diagnostic trouble code that indicates: Shift Timing Solenoid B Range/Performance
What causes a P078B error code?
The most common causes of P078B include: Shift Solenoid B Malfunction; Solenoid circuit problems; Low or contaminated transmission fluid; Mechanical problems in the gearbox.
How do I fix a P078B diagnostic trouble code?
To fix P078B: Check the level and condition of the transmission fluid. Diagnose the electrical circuit of the solenoid. Check resistance and operation of solenoid B. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P078B?
Limited driving only, diagnose soon
How much does it cost to fix P078B?
The estimated repair cost for P078B is $17–67. Actual cost depends on your vehicle, location, and labor rates.
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