Control Module Internal Temperature Sensor A Circuit Intermittent/Erratic
The internal temperature sensor of the control module shows intermittent jumps or dropouts. Module thermal protection may falsely activate or fail to activate when needed.
Affected components
- Control module
- Internal temperature sensor
Common causes
- High likelihood: Cracked solder joint at internal sensor
- Low likelihood: Electromagnetic interference on sensor trace
- Low likelihood: Connector with intermittent contact under vibration
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.