P0778
Pressure Control Solenoid B Electrical
P0778 is an OBD-II diagnostic trouble code meaning: Pressure Control Solenoid B Electrical. Common causes: pressure control solenoid b malfunction, open or short circuit in solenoid circuit. Estimated repair cost: $28–89.
Symptoms
- Hard gear shifts
- Delays when shifting gears
- Automatic transmission goes into emergency mode
- Increased engine speed when switching
- Check Engine Light Illuminates
Causes
- Pressure Control Solenoid B Malfunction
- Open or short circuit in solenoid circuit
- Poor contact in solenoid connector
- Transmission control unit malfunction
- Low or contaminated transmission fluid
How to Fix
- Check the level and condition of the transmission fluid
- Check pressure control solenoid B resistance
- Check the integrity of the solenoid circuit and connectors
- Replace faulty solenoid if necessary
- Clean or replace the hydraulic unit if dirty
Related codes
Error P0778 by Vehicle Brand
FAQ
What does the P0778 code mean?
P0778 is an OBD-II diagnostic trouble code that indicates: Pressure Control Solenoid B Electrical
What causes a P0778 error code?
The most common causes of P0778 include: Pressure Control Solenoid B Malfunction; Open or short circuit in solenoid circuit; Poor contact in solenoid connector; Transmission control unit malfunction.
How do I fix a P0778 diagnostic trouble code?
To fix P0778: Check the level and condition of the transmission fluid. Check pressure control solenoid B resistance. Check the integrity of the solenoid circuit and connectors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0778?
Limited driving only, diagnose soon
How much does it cost to fix P0778?
The estimated repair cost for P0778 is $28–89. Actual cost depends on your vehicle, location, and labor rates.
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