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 $900
- 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
P0477 Exhaust Pressure Control Valve Low Medium
The P0477 code indicates low voltage in the control circuit of the exhaust pressure control valve, from a short to ground or a lack of power. Expect a loss of power, slow warm-up when cold and high exhaust temperature.