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
- $40 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
P0123 Throttle/Pedal Position Sensor/Switch A Circuit High High
The P0123 code means the throttle or pedal position sensor signal is higher than any real position allows. The computer stops trusting it and puts the vehicle into limp mode. It is the opposite of the P0122 code and is usually caused by a short to a voltage line or an open ground.