Humidity Sensor Circuit/Open
Open circuit at the humidity sensor (used by ECU for combustion correction, especially on direct-injection engines).
Affected components
- Humidity sensor
- Sensor wiring
Common causes
- High likelihood: Signal wire open
- Low likelihood: Pin pushed back out of connector body
- Low likelihood: Cracked solder joint inside the module or sensor
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
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.