P209C
Reductant Injection Air Pressure Sensor B Circuit Low
P209C is an OBD-II diagnostic trouble code meaning: Reductant Injection Air Pressure Sensor B Circuit Low. Common causes: air pressure sensor b fault, open or short circuit in the sensor circuit. Estimated repair cost: $28–89.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Increased fuel consumption
- Problems with the SCR (AdBlue) system
- Increased emissions
Causes
- Air pressure sensor B fault
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Problems with the engine control unit
- Dirty or damaged wiring harness
How to Fix
- Check the integrity of the sensor circuit
- Check sensor connectors and connections
- Test air pressure sensor B
- Replace sensor if necessary
- Check and update ECU software if necessary
Related codes
Error P209C by Vehicle Brand
FAQ
What does the P209C code mean?
P209C is an OBD-II diagnostic trouble code that indicates: Reductant Injection Air Pressure Sensor B Circuit Low
What causes a P209C error code?
The most common causes of P209C include: Air pressure sensor B fault; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Problems with the engine control unit.
How do I fix a P209C diagnostic trouble code?
To fix P209C: Check the integrity of the sensor circuit. Check sensor connectors and connections. Test air pressure sensor B. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P209C?
Yes, but get it checked soon
How much does it cost to fix P209C?
The estimated repair cost for P209C is $28–89. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat