P0988
Transmission Fluid Pressure Sensor/Switch E Circuit Range/Performance
Generic code
Transmission System
High severity
Hard repair
Free on OBD DashX
Want real-world data on P0988?
See which problems come with P0988, 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 P0988 means
- The fault code P0988 indicates that there is an issue with the transmission fluid pressure sensor or switch E circuit, which has resulted in the circuit registering a high voltage. This may lead to transmission issues such as harsh shifting or failure to shift, and could also cause damage to other transmission components.
Possible symptoms
- Harsh shifting or failure to shift
- Illuminated check engine light
- Transmission slipping
- Reduced fuel efficiency
- Overheating transmission
Possible causes
- Failed transmission fluid pressure sensor or switch E
- Faulty wiring or connections in the circuit
- Loose or corroded electrical connections
- Failed transmission control module (TCM)
Related parts
- Hydraulic Pressure Sensor: Hydraulic oil is needed for the gear lubrication system. This sensor measures oil pressure. This car's sensor has a problem which may cause difficulty in shifting gears
Possible solutions
- Replace the transmission fluid pressure sensor or switch E
- Check and repair any damaged wiring or connections in the circuit
- Tighten or clean any loose or corroded electrical connections
- Replace the transmission control module (TCM) if necessary
Free on OBD DashX
P0988 on OBD DashX
Real-world causes, how often this code shows up, and the fix — step by step.
Open P0988 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.