U041B

Invalid Data Received From Exhaust Gas Sensor Module A

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$33–89 (est.)

Symptoms

Check Engine light comes on
Deterioration of vehicle dynamics
Increased fuel consumption
Unstable engine operation at idle
Increased level of harmful emissions

Causes

Exhaust gas sensor malfunction
Damaged wiring harness or connectors
Contact corrosion
Software error in sensor module
Circuit Grounding Problems

How to Fix

Check the condition of the exhaust gas sensor
Inspect the wiring harness and connectors for damage.
Clean contacts from corrosion
Check circuit grounding
Scan the system for additional errors

Related codes

U041A U041C U041D