A 2002 Honda CRV with 130,000 miles was purchased with an illuminated check engine light (CEL). Receipts indicate the previous owner, located in an emissions testing state, replaced an O2 sensor and catalytic converter, possibly with parts intended for a 2003 CRV due to stock availability. Despite these repairs, the CEL persisted, potentially leading to the vehicle’s sale.
A common issue with Hondas is their sensitivity to aftermarket catalytic converters. These often fail to meet the vehicle’s stringent performance standards, triggering the CEL. The receipt shows a Walker EPA Ultra Direct-Fit Converter was installed, suggesting this could be the culprit. While the vehicle ran smoothly with no noticeable performance issues, the CEL remained on.
Ultimately, the catalytic converter began producing a loud noise and was diagnosed as faulty. The vehicle was taken to a mechanic to determine the root cause of the catalytic converter failure before replacing it. While the initial suspicion was an incompatible aftermarket part, further investigation was needed to confirm the diagnosis and ensure a lasting repair. A cheap 2003 CRV catalytic converter may seem like a solution, but using the correct part for a 2002 model is crucial for optimal performance and passing emissions tests. Using the correct OBDII scanner can help diagnose the specific issue causing the check engine light.
