What is the code P0606 on a Honda Civic?
The code P0606 on a Honda Civic is a diagnostic trouble code that indicates an issue with the engine control module (ECM) or powertrain control module (PCM). This code is triggered when the vehicle's on-board computer detects a problem with the ECM/PCM's internal circuitry or programming.
What is the P0606 Code?
The P0606 code is a generic diagnostic trouble code that can occur in various vehicle makes and models, not just the Honda Civic. It is defined as "Control Module Processor Fault" and indicates that the vehicle's on-board computer has detected a problem with its own internal processor or circuitry.
When the P0606 code is set, it means the ECM/PCM is not functioning properly and may be unable to properly control and monitor the vehicle's engine and powertrain systems. This can lead to a variety of drivability issues, such as rough idling, hesitation, stalling, or even the engine not starting at all.
Causes of the P0606 Code
There are several potential causes for the P0606 code in a Honda Civic, including:
- Faulty engine control module (ECM) or powertrain control module (PCM): The ECM/PCM may have an internal hardware or software issue that is causing the processor fault.
- Wiring issues: Problems with the wiring harness or connectors between the ECM/PCM and other vehicle systems can trigger the P0606 code.
- Electrical system problems: Issues with the vehicle's battery, alternator, or other electrical components can also lead to the P0606 code.
- Sensor failures: Malfunctioning sensors that provide input to the ECM/PCM can cause the processor to detect a fault.
In many cases, the P0606 code is an indication of a more serious underlying issue with the vehicle's engine control system. Proper diagnosis and repair by a qualified technician is essential to resolving the problem.
Diagnosing and Repairing the P0606 Code
To diagnose and repair the P0606 code on a Honda Civic, a technician will typically follow these steps:
- Scan the vehicle's on-board diagnostics (OBD) system: This will retrieve the P0606 code and any other related trouble codes that can provide clues about the root cause of the issue.
- Inspect the wiring and connectors: The technician will check for any signs of damage, corrosion, or loose connections in the wiring harness and connectors between the ECM/PCM and other vehicle systems.
- Test the ECM/PCM: If the wiring checks out, the technician may need to test the ECM/PCM itself to determine if it is the source of the problem.
- Replace the ECM/PCM: If the ECM/PCM is found to be faulty, it will need to be replaced with a new or remanufactured unit.
- Clear the trouble codes and test the vehicle: After the repair, the technician will clear the P0606 code and any other related codes, then test the vehicle to ensure the issue has been resolved.
Resolving the P0606 code on a Honda Civic can be a complex process, as it may require specialized diagnostic equipment and expertise. It's important to have the vehicle inspected and repaired by a qualified automotive technician to ensure the problem is properly addressed and the vehicle is safe to operate.
How do I manually reset my PCM?
Resetting the PCM puts your car back to its factory settings. Experts usually recommend resetting the PCM to clear a code, after a part replacement, and to solve ignition issues. There are two ways to reset the PCM. The first method is by disconnecting the car battery, while the second way is by pulling the fuse.
Can a bad ignition coil damage a PCM?
PCM ignition coil driver circuits can fail due to the high current flowing through them, as well as damage by drivers that stay on too long, creating excessive heat. When replacing a PCM due to a driver failure, it is important to replace the coil as well.
Can you drive with a P0606 code?
In addition, the PCM needs to be able to communicate with various sensors throughout your car to ensure that your vehicle is working as it should. Therefore, you should not risk driving your vehicle for prolonged periods with the P0606 code.
Can a bad o2 sensor cause a P0606 code?
It is very common for Toyota's (we have seen it on 2006 to 2010 models) to set a p0606 due to a faulty o2 sensor heater.
How do I know if PCM is bad?
When the PCM is not working correctly, the most common symptom is a lack of engine power, and the Check Engine Light illuminates on your dashboard. However, you may also notice poor fuel economy, increased emissions, and shifting problems.
Can spark plugs cause P0606?
Is the MIL on with DTC P0606 (ECM/PCM processor malfunction)? Check for aftermarket spark plugs that include a built-in capacitor; they can cause electrical interference that can set this DTC. If the engine has that type of spark plugs, swap them with a set of the recommended spark plugs.
What symptoms do bad spark plugs cause?
What are the signs your Spark Plugs are failing?
- Engine has a rough idle. If your Spark Plugs are failing your engine will sound rough and jittery when running at idle.
- Trouble starting. Car won't start and you're late for work… Flat battery?
- Engine misfiring.
- Engine surging.
- High fuel consumption.
- Lack of acceleration.
How much does it cost to repair P0606?
The Cost of Fixing P0606 ECM/ECU Processor Fault
If the ECM needs to be replaced, you can expect the cost to be around $1000-$1200. This price typically includes the part itself and the labor required for installation and programming.
How do I fix error code P0606?
How Do I Fix P0606? Code P0606 tends to be set when a PCM/ECM has failed. Depending on component condition and the make and model of a vehicle, it may be possible to resolve an internal integrity fault in the PCM/ECM by upgrading or re-flashing the control module.
Where is the PCM control module?
engine compartment
The PCM is typically located in a protected area within the vehicle, such as under the dashboard, beneath the passenger seat, or in the engine compartment.
