2010 HHR O2 Sensor Fault: Codes P013E and P0138 - Diagnosis and Solutions
The 2010 HHR is displaying O2 sensor fault codes P013E and P0138. The newly installed oxygen sensor consistently reads 1.275V, indicating a potential issue with the sensor signal or exhaust system. Possible causes include: - Faulty oxygen sensor - Short to battery voltage in the O2 sensor signal circuit - High fuel pressure (less likely) For code P013E specifically, possible root causes are: - Defective O2 sensor(s) - Burnt, broken, or disconnected wiring and/or connectors - Defective catalytic converter - Engine exhaust leaks The persistent voltage reading of 1.275V suggests the sensor may not be responding correctly to engine conditions, which could indicate a faulty component or system leak.
Code P0138 may indicate one or more of the following: - Faulty oxygen sensor - Short to battery voltage in the O2 sensor signal circuit - High fuel pressure (less likely) For code P013E, potential causes include: - Defective O2 sensor(s) - Burnt, broken, or disconnected wiring and/or connectors - Defective catalytic converter - Engine exhaust leaks Further reading: https://example.com/p013e