A P0602 code is caused by an ECM (Engine Control Module) receiving a signal that the Powertrain control module (PCM) has identified an internal programming mistake. The PCM itself has a fault.
How do I fix code P0602?
What repairs can fix the P0602 code?
- Replace any faulty or damaged wiring, connectors, or components. The mechanic should also make sure that all connectors are securely connected.
- After testing the individual control modules, replace any that are faulty.
- Replace the PCM if the fault lies there.
How do I fix code P0605?
What repairs can fix the P0605 code?
- Repairing a faulty ground or power supply such as corroded components and damaged wiring.
- An Engine Control Module update, reprogramming or reflash (if applicable)
- Replacing the ECM.
What’s inside a PCM?
A power-train control module, abbreviated PCM, is an automotive component, a control unit, used on motor vehicles. It is generally a combined controller consisting of the engine control unit (ECU) and the transmission control unit (TCU).
What does lost communication with TCM mean?
It means that the transmission control module is not communicating with one or more modules that are connected with it through the CAN bus/controller area network system.
How do I fix error code P0604?
What repairs can fix the P0604 code?
- Repairing or retightening the battery terminals.
- Repairing or cleaning the various body and main engine grounds.
- Replacing associated fuses.
- Repairing damaged wiring to and from the ECM.
- Replacing the ECM.
What is a ROM error?
The Diagnostic Trouble Code (DTC) P0605 indicates “Internal Control Module Read Only Memory (ROM) Error.” The PCM keeps the software for its operating system on its Read Only Memory (ROM). If the ROM develops a problem, the software stored on it can get corrupted.
How do I fix code P0603?
Possible Solutions For Fixing the P0603 Code
- – Try Replacing your battery or alternator.
- – Replacing failed PCM or battery grounds.
- – Consider Replacing your PCM.
How much does it cost to fix PCM?
The PCM is a computer, and computers aren’t cheap to replace. That’s why the average PCM replacement cost is anywhere between $800 and $1,500, depending on the car model and labor costs. Even worse, this is almost all in the cost of the PCM itself. Labor typically only runs between $75 and $100.
How do you reset the PCM?
There is an easy way to resolve this issue. Please see the following steps: Press and hold the PCM info button for approximately 10 seconds until the PCM reboots. Immediately select the following from the PCM CAR > OPTION > Set PCM System > Reset PCM > Vehicle Handover > Yes > Yes.