Sensor Power Supply A Circuit Open
Sensor Power Supply A Circuit Open: the circuit is open. Sensors fed from this rail lose their supply and read invalid.
Affected components
- Sensor power supply a
Common causes
- High likelihood: Open in supply rail
- Low likelihood: Pin pushed back out of connector body
- Low likelihood: Cracked solder joint inside the module or sensor
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
- This code can affect emissions
Related codes
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.