Multi-code OBD2 diagnosis
Enter all the codes your scanner showed, not just the first one. We give you the overall severity, whether you can keep driving, the order in which to check them and how they relate to each other.
Summary
- Overall severity
- High
- Can I keep driving?
- No, stop and have it checked
- Estimated cost
- $50 to $500
- Codes analyzed
- 1 of 1
The order below is the recommended one: first the codes that can cause the others. After each repair, clear the codes and check which ones come back.
Order of inspection
P2138 Throttle/Pedal Position Sensor/Switch D/E Voltage Correlation High
The P2138 code means the two gas pedal signals stopped agreeing with each other. Because the accelerator is a safety system with redundancy, the computer ignores both and drops the vehicle into limp mode. The cause is usually in the pedal connector, in the shared ground or in the sensor itself.