Fault Code U0491
Code meaning, symptoms, possible causes, part number, and estimated cost.
U0491
Invalid Data Received From Control Module
Code U0491 indicates invalid data received from the Rear Engine Control Module. This fault can affect rear engine functions or related auxiliary systems, thus impairing vehicle performance.
Part Details
Part Name
Rear Engine Control Module
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪700 - ₪2500
Engine Location
Rear of Vehicle
Symptoms
- Check Engine Light (MIL)
- Reduced engine power
- Rough engine operation
- Malfunctions in rear engine-related functions
Possible Causes
- 1Faulty Rear Engine Control Module
- 2Loose wiring or connector issues
- 3Software malfunction in the module
- 4Interference in the communication network (CAN bus)
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