Auto parts stores like AutoZone, Advance Auto Parts, and O’Reilly Auto Parts offer free code reading services. They also sell scanners, and building a relationship with your local store can provide valuable assistance beyond a simple “check online.” However, avoid peak hours for better service.
Before rushing to buy parts based on a code, diagnose and test each suspected component. Some auto parts stores offer free testing for certain parts. Avoid the “parts cannon effect” of replacing parts without confirming the fault. Thorough research and testing, starting with the cheapest options, are crucial, as multiple issues can cause similar symptoms.
For a 2004 CRV, a disconnected impact sensor under the front bumper, potentially unplugged during service, is a possible cause. Vibration can also loosen a poorly connected sensor. Another possibility is a faulty clockspring behind the steering wheel, disrupting communication with the ECU.
