U040C
Invalid Data Received From Exhaust Gas Recirculation Control Module B
U040C is an OBD-II diagnostic trouble code meaning: Invalid Data Received From Exhaust Gas Recirculation Control Module B. Common causes: egr module b malfunction, open or short circuit in the communication circuit. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Deterioration in acceleration dynamics
- Increased fuel consumption
- Unstable engine operation at idle
- Possible misfires
Causes
- EGR module B malfunction
- Open or short circuit in the communication circuit
- Poor contact in connectors
- Software error in EGR module B
- EGR module B power supply problems
How to Fix
- Check the integrity of the wiring harness to the EGR module B
- Check connections and contacts in connectors
- Scan EGR module B for errors
- If necessary, replace EGR module B
- Update module software (if available)
Related codes
Error U040C by Vehicle Brand
FAQ
What does the U040C code mean?
U040C is an OBD-II diagnostic trouble code that indicates: Invalid Data Received From Exhaust Gas Recirculation Control Module B
What causes a U040C error code?
The most common causes of U040C include: EGR module B malfunction; Open or short circuit in the communication circuit; Poor contact in connectors; Software error in EGR module B.
How do I fix a U040C diagnostic trouble code?
To fix U040C: Check the integrity of the wiring harness to the EGR module B. Check connections and contacts in connectors. Scan EGR module B for errors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U040C?
Yes, but get it checked soon
How much does it cost to fix U040C?
The estimated repair cost for U040C is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat