Fault Code U0440
Code meaning, symptoms, possible causes, part number, and estimated cost.
U0440
Invalid Data Received From Control Module (Engine Control Module)
This code indicates that invalid data was received from the Engine Control Module (ECM), the central brain for engine operation. This fault can cause serious engine functional issues and prevent the vehicle from starting.
Part Details
Part Name
Engine Control Module (ECM)
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪2,500 - ₪8,000
Engine Location
Engine compartment
Symptoms
- Engine no-start/stalling
- Very poor engine performance
- Check Engine light on
- Excessive fuel consumption
Possible Causes
- 1ECM malfunction
- 2Critical wiring or connector issues
- 3Severe CAN network interference
- 4Internal short circuit in the module
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