P0037 - Ho2S Heater Control Circuit Low (Bank 1, Sensor 2) - DTC Chart
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P0037 - HO2S HEATER CONTROL CIRCUIT LOW (BANK 1, SENSOR 2) - DTC CHART
| Description: The PCM controls the heated oxygen sensor bank 1, sensor 2 (HO2S12) heater ON and OFF duty cycle to maintain a calibrated temperature. This DTC sets when the sensor does not warm up to the required temperature in a calibrated amount of time. This DTC also sets when the PCM is not able to maintain the required temperature after the sensor is warm. | |||
Possible Causes:
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| Diagnostic Aids: 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 DW . | ||