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
- $50 to $600
- 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
P1682 Voltage Difference Between the Module Two Ignition Feed Circuits (Manufacturer Code) High
On vehicles from the General Motors group, the engine control module gets power through two independent circuits and compares their voltages, and the P1682 code appears when they do not match. The typical symptom is a vehicle that cranks but does not start, or one that suddenly loses power.