P0988 code indicates a problem with the Transmission Fluid Pressure Sensor or Switch “E” circuit, specifically related to its range or performance.
P0988 Transmission Fluid Pressure Sensor/Switch “E” Circuit Range/Performance
Code symptoms P0988.
– Harsh shifting of gears
– Transmission slipping
– Vehicle may go into limp mode
– Check Engine Light (MIL) illuminated
Causes of the code P0988.
1. Faulty transmission fluid pressure sensor or switch “E”
2. Wiring issues, such as damaged or broken wires
3. Poor electrical connections related to the sensor or switch
4. Problems with the transmission control module (TCM)
5. Low transmission fluid levels or contaminated fluid
Code Solutions P0988.
1. Check the transmission fluid level and condition to ensure it is at the correct level and is clean. If the fluid is low or dirty, perform a transmission fluid flush and refill.
2. Inspect the wiring and connectors related to the transmission fluid pressure sensor or switch “E” for any damage, corrosion, or loose connections. Repair or replace as necessary.
3. Test the transmission fluid pressure sensor or switch “E” using a multimeter to ensure it is functioning properly. Replace the sensor if it is faulty.
4. Clear the trouble codes from the vehicle’s computer system using an OBD-II scanner, and then drive the vehicle to see if the code reappears. If it does, further diagnostics may be required to identify the root cause of the issue.
5. If all else fails, seek assistance from a professional mechanic or dealership specializing in transmission repairs to accurately diagnose and fix the problem.