P05AC
Active Grille Air Shutter B Position Sensor Circuit Low
P05AC is an OBD-II diagnostic trouble code meaning: Active Grille Air Shutter B Position Sensor Circuit Low. Common causes: short circuit of the sensor signal wire to ground, sensor power wire break.
Symptoms
- Check Engine Light Is On
- The blinds are fixed in one position (open or closed)
- Increased fuel consumption
- Possible overheating in hot weather or high load
- Air noise through the grille (with stuck open blinds)
Causes
- Short circuit of the sensor signal wire to ground
- Sensor power wire break
- Internal sensor malfunction (short to housing)
- Corrosion or contamination of the sensor connector
- Open circuit between sensor and ECU
How to Fix
- Read all error codes and document
- Visually inspect the wiring and connector of the section B sensor
- Disconnect the connector and check the sensor supply voltage (usually 5 V)
- Check the signal wire for a short circuit to ground (resistance to the body should be infinite)
- Replace sensor if wiring is normal
- Reset the error and check the system operation
Related codes
Error P05AC by Vehicle Brand
FAQ
What does the P05AC code mean?
P05AC is an OBD-II diagnostic trouble code that indicates: Active Grille Air Shutter B Position Sensor Circuit Low
What causes a P05AC error code?
The most common causes of P05AC include: Short circuit of the sensor signal wire to ground; Sensor power wire break; Internal sensor malfunction (short to housing); Corrosion or contamination of the sensor connector.
How do I fix a P05AC diagnostic trouble code?
To fix P05AC: Read all error codes and document. Visually inspect the wiring and connector of the section B sensor. Disconnect the connector and check the sensor supply voltage (usually 5 V). For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P05AC?
Do not drive — repair immediately
See also: Russian version · NationStat