The Check Engine light may indicate a serious issue with your Cummins diesel engine. Here's how to check and clear the fault codes triggering that light.

Once your vehicle’s computer system has been scanned and the P2015 fault code has been confirmed, you can begin your diagnosis.

Here's how erasing trouble codes can go very wrong for you and your technicians. The typical vehicle rolling into your service department is equipped with the OBD-II self-diagnostic capability.