This code indicates that the Powertrain Control Module (PCM) has detected an error in the checksum of its internal memory. The checksum is a mathematical calculation that is used to verify the integrity of the data in the PCM's memory. If the checksum is incorrect, it means that the data in the PCM's memory may be corrupted, which could lead to engine performance problems.
Possible Causes
- Faulty PCM
- Damaged wiring or connectors
- Software glitch
Symptoms
- Check Engine Light may be illuminated
- Engine may run rough or stall
- Transmission may shift erratically
- Fuel economy may decrease
Diagnosis
The first step in diagnosing a P0601 code is to scan the PCM for trouble codes. If the P0601 code is present, it will need to be diagnosed and repaired. The diagnostic process will typically involve checking the PCM's wiring and connectors, as well as testing the PCM itself.
Repair
The repair for a P0601 code will typically involve replacing the PCM. If the wiring or connectors to the PCM are damaged, they will also need to be repaired. In some cases, a software update may be able to fix the problem.
Cost of Repair
The cost of repairing a P0601 code can vary depending on the make and model of the vehicle, as well as the labor rates of the repair shop. However, the average cost of repair is typically between $500 and $1,000.
