P078B
Shift Timing Solenoid B Range/Performance
Generic code
Transmission System
High severity
Hard repair
Free on OBD DashX
Want real-world data on P078B?
See which problems come with P078B, how often it shows up in other vehicles, and how to fix it — step by step.
- Real-world fix data
- How often it happens
- Step-by-step repairs
What P078B means
- Issue in timing when to command to engage and disengage gear
Possible symptoms
- Very rough gear shifting
Possible causes
- Faulty shift solenoid
- Low transmission fluid level
- Dirty or contaminated transmission fluid
- Poor electrical connection for shift solenoid
- Valve body assembly faulty
Related parts
- Transmission Shift Sensor: Gear Shift Sensor communicates the position the gear shifted to. Problems lead to difficulty in shifting gears
Possible solutions
- Inspect the transmission fluid with a dipstick
- If the fluid smells burnt or looks abnormal, remove the transmission pan and check it for debris
- After the transmission is rebuilt, if needed, fill it with fluid enough to fix any leaks
Free on OBD DashX
P078B on OBD DashX
Real-world causes, how often this code shows up, and the fix — step by step.
Open P078B No sign-up needed · available in 10 languagesScan your own car
Read and clear fault codes, live data and service resets with the CaRPM app.