Common Symptoms
- Check Engine Light illuminated
- Multiple unrelated fault codes stored
- Intermittent gauge cluster malfunction
- Loss of communication with scan tool
- ABS or traction control warning lights on
- Transmission shifting issues or limp mode
Most Likely Root Causes
- Failed or failing engine control module (ECM/PCM)
- Corroded or damaged wiring harness connectors
- Low battery voltage or weak battery
- Failed body control module or other network module
- Software corruption or module programming issue
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Component Location
The engine control module is typically mounted in the engine bay, often on the firewall, inner fender, or below the intake manifold.
Manufacturer Notes
This code often indicates internal ECM/PCM failure or network communication breakdown requiring module replacement or reprogramming.
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