P0602 BUICK code

P0602 is a diagnostic trouble code (DTC) for “Control Module Programming Error“.

What does code P0602 mean?

Meaning. 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.

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).

How do I fix code P0602?

What repairs can fix the P0602 code?

  1. Replace any faulty or damaged wiring, connectors, or components. The mechanic should also make sure that all connectors are securely connected.
  2. After testing the individual control modules, replace any that are faulty.
  3. Replace the PCM if the fault lies there.

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 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.

How do you know if your PCM is bad?

What Are the Symptoms of a Faulty PCM?

  1. Your “check engine” light is on.
  2. Other warning lights may be on, including traction control and ABS.
  3. You lose fuel economy for no apparent reason.
  4. Your car stutters when starting, requires multiple attempts, or won’t start at all.
  5. Stuttering or stalling during idling.

How do I fix code P0605?

What repairs can fix the P0605 code?

  1. Repairing a faulty ground or power supply such as corroded components and damaged wiring.
  2. An Engine Control Module update, reprogramming or reflash (if applicable)
  3. Replacing the ECM.

How do I fix error code P0600?

What repairs can fix the P0600 code?

  1. ECU replacement.
  2. Diagnosing and repairing the cause of the low battery voltage.
  3. Repairing or replacing the ECU wiring harness.
  4. Fixing poor electrical connections.