P2AD1
Throttle/Pedal Position Sensor/Switch C/G Voltage Correlation
The voltage signals of throttle/pedal position channels C and G do not correlate within the calibrated tolerance. One sensor element drifted or harness shows offset between channels.
The voltage signals of throttle/pedal position channels C and G do not correlate within the calibrated tolerance. One sensor element drifted or harness shows offset between channels.
Common causes
- high
Sensor channel C or G drifted
One of the most commonly reported causes for this code — check this first.
Typical part cost: $130-660
- medium
Harness offset between channels
A plausible cause — test and verify before replacing parts.
Typical part cost: $130-660
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P2AD1 mean?
P2AD1 means "Throttle/Pedal Position Sensor/Switch C/G Voltage Correlation". It is a generic OBD-II code that points to a fault in the auxiliary emission controls.
What are the most common causes of P2AD1?
sensor channel c or g drifted; harness offset between channels — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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