EGR B Control Circuit
A general electrical fault on EGR control circuit B — second EGR valve on engines with high-pressure and low-pressure EGR loops.
Affected components
- Egr valve
Common causes
- High likelihood: Solenoid winding fault
Possible symptoms
- Check engine light on
- Pinging or knocking under load
- Power loss and hesitation
- Possible rough idle
- Failed emissions inspection (NOx)
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.