Code result
P077E
Transmission Fluid Temperature Measurement System - Multiple Sensor Correlation
High severity
What it means
Modern transmissions can have two or more ATF temperature sensors (sump, cooler return, valve body). After a long key-off soak they should all read approximately the same ambient. The TCM detects an implausible spread between sensors — one of them drifts or is wired wrong.
Is it safe to drive?
No — stop driving
This code points to a problem that can cause damage or affect safety. Avoid driving and have the vehicle diagnosed promptly.
Most likely causes
One sensor drifting outside tolerance
highOne of the most commonly reported causes for this code — check this first.
Sensors swapped after service
mediumA plausible cause — test and verify before replacing parts.
Related help
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