OBD-II Code · Sensors
P2138
Throttle/Pedal Position Sensor "D"/"E" Voltage Correlation
critical severityDo not drive$200-$600
Pedal sensor D and E disagree by more than allowed.
Common symptoms
- Throttle limp
- Severe power loss
- CEL
Likely causes
- Failed pedal assembly
- Wiring
Where to start
- Try the cheapest cause first. Start by checking: failed pedal assembly.
- Cost & scope. $200-$600
- If the code returns after the fix: escalate to a shop or scanner with live-data and freeze-frame. A code that re-sets means the underlying fault is still there. Don't keep driving with this one active — risk of damage.
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