U041C

Invalid Data Received From Rocker Arm Control Module A

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Increased fuel consumption
Unstable engine idling
Problems with acceleration dynamics

Causes

Malfunction of rocker control module (A)
Damage to the wiring harness to the module
Poor contact in connectors
Module power problems
Software error in ECU

How to Fix

Check the condition of the wiring harness to the module
Check contacts in connectors
Measure the module supply voltage
Scan the module for errors
Replace rocker arm control module if necessary

Related codes

U041D U041E U041F