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, no immediate risk
- Estimated cost
- $20 to $300
- 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
P2646 A Rocker Arm Actuator System Performance/Stuck Off (Bank 1) Medium
The P2646 code means the rocker arm switching system (VTEC on Honda) does not engage when it should, because the pressure switch does not detect the change. The car drives, but with less power at high rpm. Start with the oil level and the oil type.