Code result
P2135
Throttle/Pedal Position Sensor "A"/"B" Voltage Correlation
High severity
What it means
The two redundant throttle position sensors on the throttle body disagree by more than allowed. Distinct from P2138 which monitors the pedal pair — P2135 monitors the throttle-body pair on drive-by-wire systems.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
Throttle position sensor track worn
highOne of the most commonly reported causes for this code — check this first.
Corrosion on throttle body connector
mediumA plausible cause — test and verify before replacing parts.
Related help
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