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?
- Yes, but with caution
- Estimated cost
- $20 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
C0274 Excessive Dump or Isolation Time High
The C0274 code means the ABS kept the dump or isolation valves of one wheel open longer than normal, usually because it believed that wheel was locking up. The cause is more often a bad wheel sensor or tone ring than the hydraulic unit.