P1150: Lack Of HO2S21 Switch - Adaptive Fuel At Limit
MediumPowertrainO2 Sensors
What does P1150 mean?
P1150 is a diagnostic trouble code indicating "Lack Of HO2S21 Switch - Adaptive Fuel At Limit". This code relates to your vehicle's o2 sensors and should be diagnosed to determine the root cause. The severity level helps indicate how urgently this should be addressed.
Common causes
- Faulty o2 sensors component
- Wiring or connector issue in the related circuit
- Failed sensor providing incorrect readings
- Software/calibration issue requiring ECU update
- Related component causing secondary fault
What should you do?
Schedule a diagnostic appointment at your earliest convenience. The vehicle is generally safe to drive short distances, but the underlying issue should be addressed to prevent it from worsening.
Get a diagnosis for YOUR car
Code P1150 can mean different things depending on your vehicle. TorqueBot gives you a diagnosis specific to your make, model, and year.