A P0135 code indicates a problem with the heater circuit of your oxygen sensor (O2 sensor). While a blown fuse might seem like a likely culprit, it’s often not the case. This article details a real-world experience troubleshooting a P0135 code on a 2008 Honda Odyssey, highlighting the importance of thorough inspection beyond checking the O2 Sensor Fuse Location.
After replacing Bank 1 Sensor 1 O2 sensor to address a P0134 code, a P0135 code appeared, suggesting an open circuit. While checking the O2 sensor fuse location was a logical step, all fuses were intact. This pointed towards a different issue.
Further investigation revealed a bent pin on the connector of the new O2 sensor. This prevented proper connection and triggered the P0135 code. The likely cause was a damaged part, potentially a returned item.
Fortunately, the issue was resolved without removing the sensor. Carefully straightening the bent pin allowed for a proper connection, clearing the P0135 code.
This experience underscores that while knowing the O2 sensor fuse location is important, a P0135 code may stem from problems beyond a blown fuse. Thorough inspection of the sensor and its connector is crucial for accurate diagnosis and repair. A simple bent pin can be the source of significant frustration, highlighting the need for meticulous attention to detail when working with automotive sensors. Always consider the possibility of a faulty part, especially when dealing with new components.
Example of a bent pin on an oxygen sensor connector.
Typical location of an oxygen sensor in an engine bay.
