Solution for FAW Jiefang P0601 Fault Code?

[OLondon]

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.

[SophieDella]

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.

[OMadeline]

Hey, I've been in truck maintenance for years, and the P0601 code usually indicates internal data errors in the ECU. Quick fix: Use tools to disconnect the battery and reboot the system, then try starting the engine after half an hour. If the code persists, it might be due to dust or moisture corrosion on the ECU circuit board. Open it up, clean the connectors, and wipe the pins with alcohol—avoid scratching them. For FAW Jiefang trucks, the ECU is located on the side of the engine bay, and loose ground wires are common, so tighten them. In most cases, updating the OBD diagnostic software can resolve the issue, but you'll need professional equipment to read detailed fault codes. Don’t randomly buy second-hand ECUs for replacement—poor compatibility could make things worse. I recommend visiting a 4S shop where experienced technicians can handle it quickly. Also, minimize bumps and vibrations while driving to protect the ECU and extend its lifespan.

[VonAshlyn]

When I was driving a FAW truck for freight transport, the P0601 code lit up, which gave me a scare. The solution involves multiple approaches: first, disconnect the battery to reset the ECU, which might clear temporary errors. Second, inspect the power system; if the battery is old, replace it to ensure stable power supply. Third, contact an authorized repair shop—they can use diagnostic tools to read specific data and determine whether to replace the module or update the software. Fourth, prioritize prevention by conducting regular vehicle inspections, especially focusing on the electrical components and wiring harness aging. Fifth, safety first—when a fault code appears, don’t force the vehicle to run; pull over and seek help. Simple DIY attempts carry high risks, such as electric shock or component damage, so relying on professionals saves hassle and costs in the long run.