U011C

Lost Communication With Rocker Arm 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 of vehicle dynamics
Increased fuel consumption
Unstable engine operation at idle
Engine power limitation

Causes

Open or short circuit in the module power supply circuit
Damage to the wiring harness to the module
Malfunction of the rocker control module
Connector problems or contact corrosion
Malfunction of the main engine ECU

How to Fix

Check the integrity of the wiring harness to the module
Inspect connectors for corrosion or damage
Check the module supply voltage
Scan the system for related errors
If necessary, replace the rocker arm control module

Related codes

U011B U011D U011A