Driver Display Serial Communication Circuit
The serial communication line to the driver display (instrument cluster, MIL/check-engine warning) shows a circuit fault. Driver may not see warning lights as expected.
Affected components
- Driver display communication
Common causes
- High likelihood: Harness or driver fault
- Low likelihood: Gateway module routing CAN messages incorrectly
- Low likelihood: CAN terminating resistor (120 Ω) drifted out of spec
Possible symptoms
- Check engine light on
- Possible limp mode or no-start
- Multiple follow-up faults across modules
- Reset/relearn may be needed after repair
Diagnostic notes
- The malfunction indicator lamp may illuminate
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.