Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer is having trouble reading the pressure of the transmission fluid. It's like trying to play a video game with a broken controller; the car can't 'see' what's happening inside the transmission properly.
The P0988 code indicates an issue with the transmission fluid pressure sensor or switch, specifically related to circuit E. The sensor is not providing readings within the expected range.
The transmission fluid pressure sensor/switch monitors the hydraulic pressure in the transmission. The P0988 code is triggered when the sensor's signal falls outside the expected range, indicating a possible malfunction in the sensor or its circuit.
• Check Engine Light illuminated
• Transmission shifting issues
• Poor fuel economy
• Transmission overheating
• Faulty transmission fluid pressure sensor/switch
• Wiring issues such as shorts or open circuits
• Poor electrical connections
• Faulty transmission control module (TCM)
OBD-II: On-Board Diagnostics, Second Generation
TCM: Transmission Control Module
• Use an OBD-II scanner to verify the code.
• Inspect the wiring and connectors related to the sensor.
• Test the transmission fluid pressure sensor for proper operation.
• Check the transmission control module for faults.
• Replace the faulty transmission fluid pressure sensor/switch.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the transmission control module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Honda Accord
• Ford F-150
• Toyota Camry
• Regular transmission fluid checks and changes
• Routine inspection of wiring and connectors
• Avoid overloading the vehicle
Sensor Issue
• Avoid driving the vehicle until the issue is resolved to prevent further damage.
• Consult a professional mechanic for a thorough diagnosis.
Check with the vehicle manufacturer for warranty coverage on transmission components.
The P0988 code has been associated with vehicles experiencing transmission issues due to sensor failures or wiring problems.
Moderate – It's important to address this issue soon to avoid potential transmission damage.
Driving with a faulty transmission sensor can lead to unsafe driving conditions. It is advisable to fix the issue promptly.
• Vehicle at operating temperature
• Transmission in drive mode
The transmission fluid pressure sensor is typically located on the transmission body or near the valve body.
Q: Can I drive with a P0988 code?
A: It's not recommended to drive with this code as it can lead to transmission damage.
Q: How do I reset the P0988 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue persists, further diagnosis is needed.
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