P222C OBD II Trouble Code Barometric Pressure Sensor B Low

How to quickly diagnose, repair, and info on symptoms and causes of a P222C DTC code that indicates a low electrical condition with the B barometric pressure sensor.

Symptoms of P222C OBD II Trouble Code

  • Lack of engine power and performance (or limited)
  • Engine misfiring
  • Abnormal engine noise(s)
  • Fuel smell
  • Decrease in the fuel economy
  • Decreased throttle responsiveness

Common Causes of P222C OBD II Trouble Code

  • Defective or damaged BAP (Barometric Air pressure) sensor
  • Defective or damaged electrical connector
  • Wiring issue (e.g. open, short, corrosion)
  • Electrical short (internal or mechanical)
  • Loose electrical connection
  • Heat damage
  • Mechanical malfunction causing altered BAP readings
  • ECM (Engine Control Module) issue

Severity of P222C OBD II Trouble Code

Severity will moderately high here. Reading this, a certain sense of urgency needs to be applied in order to maintain efficient engine operation. Anytime a fault can directly affect very important values such as air/fuel ratios, and is actively present, you should not operate your vehicle, to prevent any engine damage. Having that said, if you've driven the vehicle since the fault has been active, don't worry too much, you are probably fine. Big takeaway, if left unattended, this fault could cause expensive internal engine damage in the future.