Engine Communication Circuit
Table of contents
U1040 INFINITI Possible Causes
- Faulty Engine Control Module (ECM)
- Engine Control Module (ECM) harness is open or shorted
- Engine Control Module (ECM) circuit poor electrical connection
How do I fix code U1040 INFINITI?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the U1040 INFINITI code
The cost of diagnosing the U1040 INFINITI code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
U1040 INFINITI Description
The Diagnostic Trouble Code (DTC) sets when the Engine Control Module (ECM) cannot transmit a communication signal to the generator.