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
- Medium
- Can I keep driving?
- Yes, but with caution
- Estimated cost
- $80 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
P0179 Fuel Composition Sensor Circuit High Medium
The P0179 code means the signal from the fuel composition (flex fuel) sensor is above its maximum value. It is usually caused by a broken sensor ground, an open wire or a short to voltage. Check the connector and the wiring before you replace the sensor.