P0150 - O2 Circuit (Bank 2, Sensor 1)

4-32 Powertrain DTC Charts and Descriptions

Diagnostic Trouble Code (DTC) Charts and Descriptions

P0150 - O2 Circuit (Bank 2, Sensor 1) (Continued)

• Damaged or corroded pins

• Exhaust temperature significantly higher than expected

• Damaged universal heated oxygen sensor bank 2, sensor 1 (HO2S21) heater

Diagnostic Aids:

Application Key On Engine Off Key On Engine Running Continuous Memory

All GO to Pinpoint Test DZ.

P0151 - O2 Circuit Low Voltage (Bank 2, Sensor 1)

Description: This DTC sets when a concern is detected with one of the circuits used to determine the oxygen content in the

exhaust gas.

Possible Causes: • UO2S21 circuit short to ground

• UO2SGREF21 circuit short to ground

• UO2SPC21 circuit short to ground

• UO2SPCT21 circuit short to ground

• Damaged universal heated oxygen sensor bank 2, sensor 1 (HO2S21)

Diagnostic Aids: An engine stall condition or an extremely rich air to fuel ratio may set this DTC. Diagnose any engine stall or rich

air to fuel ratio concerns before diagnosing this DTC. Inspect the connectors for signs of damage, water intrusion or corrosion.

Application Key On Engine Off Key On Engine Running Continuous Memory

All GO to Pinpoint Test DZ.

P0152 - O2 Circuit High Voltage (Bank 2, Sensor 1)

Description: This DTC sets when an over voltage concern is detected with one of the circuits used to determine the oxygen

content in the exhaust gas.

Possible Causes: • UO2S21 circuit short to voltage

• UO2SGREF21 circuit short to voltage

• UO2SPC21 circuit short to voltage

• UO2SPCT21 circuit short to voltage

Diagnostic Aids:

Application Key On Engine Off Key On Engine Running Continuous Memory

All GO to Pinpoint Test DZ.

P0153 - O2 Circuit Slow Response (Bank 2, Sensor 1)

Description: The PCM monitors the universal heated oxygen sensor bank 2, sensor 1 (HO2S21) response time by

commanding a calibrated fuel control routine. This routine sets the air to fuel ratio to a calibrated limit to produce a predictable oxygen sensor signal amplitude. This DTC sets when the oxygen sensor signal does not reach the predicted amplitude within a predetermined response time.

Possible Causes: • Exhaust leaks

• Incorrect fueling

• Intake air system leaks

• Mass airflow (MAF) sensor (if equipped)

• Contaminated universal HO2S21

• Deteriorating universal HO2S21

Diagnostic Aids:

Application Key On Engine Off Key On Engine Running Continuous Memory

All GO to Pinpoint Test DZ.

P0154 - O2 Circuit No Activity Detected (Bank 2, Sensor 1)

Description: If the sensor signal value is not changing from the default value, the PCM commands an oscillating air to fuel

ratio attempting to detect some movement in the signal value. This DTC sets when the PCM is unable to detect movement in the sensor signal while the air to fuel ratio is oscillating.

2016 Powertrain Control/Emissions Diagnosis, Gasoline Engines, 3/2015