Solution for FAW Jiefang P0601 Fault Code?
2 Answers
After troubleshooting the vehicle, it is often necessary to clear the fault codes. When clearing fault codes, it is essential to follow the specified method for the particular vehicle model. Under no circumstances should the negative terminal of the battery be disconnected haphazardly to clear the fault codes. Otherwise, it may lead to the following two issues: First, it may cause the control center computer of some vehicle models to lose normal records. As we know, certain vehicle models' control computers have an automatic memory function. If the negative terminal's grounding wire is removed carelessly, useful engine operation data stored in the random access memory (RAM) will be erased. This is why some people find that after maintenance and clearing, the vehicle's performance remains subpar for a long time, or previously cleared fault codes reappear after some driving. Second, it may result in the loss of certain functions, such as the audio system's lock feature. In such cases, a complicated repair procedure is required to decrypt the audio system before its original functionality can be restored.
I remember driving a FAW Jiefang truck for over a decade and encountered the P0601 trouble code, which is quite common. It indicates a ROM memory error in the ECU computer board, possibly due to software corruption or hardware failure. To resolve it, I would first disconnect the negative battery terminal for ten minutes to perform a hard reset on the system—sometimes it just goes back to normal. If that doesn’t work, you’ll need to check whether the battery voltage is stable and inspect the ECU wiring connectors for looseness, corrosion, or short circuits. Don’t tamper with it randomly to avoid causing more damage. In Jiefang trucks, the ECU is located under the driver’s seat—be careful when lifting it for inspection. If all else fails, take it to an authorized service center for a new ECU or software reflash, though the cost isn’t cheap, starting at over a thousand yuan. Regular maintenance of the electrical system, like periodic battery replacements, can help reduce such issues. Safety comes first—truck breakdowns on the road are dangerous, so don’t cut corners to save money.
