P077E
Transmission Fluid Temperature Measurement System Multiple Sensor Correlation
Generic OBD-II
Common symptoms
What you'll notice
- Check and replace any faulty sensors related to the transmission fluid temperature measurement system.
- Inspect and repair any damaged wiring or connections related to the transmission fluid temperature measurement system.
- Verify and adjust the transmission fluid level and quality, ensuring it meets the manufacturer's specifications.
- Reset the OBD 2 error code and monitor the vehicle's performance to see if the issue persists.
- If the problem persists, consult the vehicle's service manual or contact the manufacturer for further guidance.
Common causes
Most likely first
- Faulty transmission temperature sensor
- Low transmission fluid level
- Blocked transmission fluid cooler lines
- Faulty transmission control module
- Wiring issues or electrical connection problems
How to diagnose & fix
Work through it in order
- Overheating of the transmission
- Delayed or erratic shifting
- Slipping or jerking during acceleration
- Reduced fuel efficiency
- Illumination of the Check Engine Light
Read & clear P077E yourself
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