Cause
Failed oxygen sensor heater element
The heater bringing an oxygen sensor up to operating temperature faster than the exhaust would. Without it the sensor is ignored until the exhaust warms up, so the engine runs on defaults for longer, emissions monitors may never complete, and economy suffers — usually with no driveability complaint at all.
Typically an easy fix. Often worth checking before paying anyone to look.
Codes this can cause (42)
Codes where this is a likely explanation first, rather than merely a possible one.
- P0030 O2 Sensor Heater Control Circuit — Bank 1 Sensor 1 Likely for this code Moderate
- P0031 O2 Sensor Heater Control Circuit Low — Bank 1 Sensor 1 Likely for this code Moderate
- P0032 O2 Sensor Heater Control Circuit High — Bank 1 Sensor 1 Likely for this code Moderate
- P0036 O2 Sensor Heater Control Circuit — Bank 1 Sensor 2 Likely for this code Moderate
- P0037 O2 Sensor Heater Control Circuit Low — Bank 1 Sensor 2 Likely for this code Moderate
- P0038 O2 Sensor Heater Control Circuit High — Bank 1 Sensor 2 Likely for this code Moderate
- P0042 O2 Sensor Heater Control Circuit — Bank 1 Sensor 3 Likely for this code Moderate
- P0043 O2 Sensor Heater Control Circuit Low — Bank 1 Sensor 3 Likely for this code Moderate
- P0044 O2 Sensor Heater Control Circuit High — Bank 1 Sensor 3 Likely for this code Moderate
- P0050 O2 Sensor Heater Control Circuit — Bank 2 Sensor 1 Likely for this code Moderate
- P0051 O2 Sensor Heater Control Circuit Low — Bank 2 Sensor 1 Likely for this code Moderate
- P0052 O2 Sensor Heater Control Circuit High — Bank 2 Sensor 1 Likely for this code Moderate
- P0053 O2 Sensor Heater Resistance — Bank 1 Sensor 1 Likely for this code Moderate
- P0054 O2 Sensor Heater Resistance — Bank 1 Sensor 2 Likely for this code Moderate
- P0055 O2 Sensor Heater Resistance — Bank 1 Sensor 3 Likely for this code Moderate
- P0056 O2 Sensor Heater Control Circuit — Bank 2 Sensor 2 Likely for this code Moderate
- P0057 O2 Sensor Heater Control Circuit Low — Bank 2 Sensor 2 Likely for this code Moderate
- P0058 O2 Sensor Heater Control Circuit High — Bank 2 Sensor 2 Likely for this code Moderate
- P0059 O2 Sensor Heater Resistance — Bank 2 Sensor 1 Likely for this code Moderate
- P0060 O2 Sensor Heater Resistance — Bank 2 Sensor 2 Likely for this code Moderate
- P0061 O2 Sensor Heater Resistance — Bank 2 Sensor 3 Likely for this code Moderate
- P0062 O2 Sensor Heater Control Circuit — Bank 2 Sensor 3 Likely for this code Moderate
- P0063 O2 Sensor Heater Control Circuit Low — Bank 2 Sensor 3 Likely for this code Moderate
- P0064 O2 Sensor Heater Control Circuit High — Bank 2 Sensor 3 Likely for this code Moderate
- P0134 O2 Sensor Circuit No Activity Detected — Bank 1 Sensor 1 Likely for this code Moderate
Information, not instruction
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