U010B

Lost Communication With Exhaust Gas Recirculation Control Module B

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Deterioration in acceleration dynamics
Increased fuel consumption
Unstable engine operation at idle
Possible detonation knocks

Causes

Open or short circuit in the power supply circuit of the EGR B module
Damage to the wiring harness to the EGR module B
Malfunction of the EGR control module B itself
Connector problems or contact corrosion
Failures in the control unit software

How to Fix

Check fuses related to the EGR system
Inspect the EGR B module wiring harness and connectors for damage.
Check supply voltage and ground of EGR module B
Scan EGR module B for additional trouble codes
If necessary, replace EGR control module B

Related codes

U010A U0109 P0401