2003 landrover freelander 2.5 V 6 ..Starting problem..Could a code of P0606 ECM/PCM Processer Failure be because of a bad alternator...?..With a new battery the lights are very dim...I cant check alternator because it wont start...Please Help..Metalpoet

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The P0606 fault code means that there's an error with your power control module (PCM). Your PCM is the computer inside your car that monitors all the vital systems. Basically, it's the brain of your car. Every time you start the car, the PCM runs a series of checks to make sure everything is okay.

How to Fix the P0606 Fault Code - Solo Auto Electronics

What the P0303 code means. The P0303 DTC is set when the ECU detects multiple misfires from cylinder 3. Misfires cause the ECU to set the Check Engine Light and put the vehicle into a failsafe mode to prevent damage. The Check Engine Light will remain until the code is repaired.

P0303 OBD-II Trouble Code: Cylinder 3 Misfire Detected

Your $7E8 and the $7E9 are fuel/ air intake codes, as for the P1326 Ok, this code is set when the knock sensor detects vibrations from engine rod knock, however, it may be set falsely due to incorrect knock sensor logic programming in the engine control module.

Codes $7E8, $7E9 and P1326? - CarGurus.ca

P0606
The P0606 fault code means that there's an error with your power control module (PCM). Your PCM is the computer inside your car that monitors all the vital systems. Basically, it's the brain of your car. Every time you start the car, the PCM runs a series of checks to make sure everything is okay.

How to Fix the P0606 Fault Code - Solo Auto Electronics

https://www.solopcms.com > blog > fix-p0606-fault-code

P0606 - Meaning, Causes, Symptoms, & Fixes - FIXD

https://www.fixdapp.com > blog > p0606-code
6 days ago - Code P0606 is triggered when there is a fault found in the processor internal to the Engine Control Module (ECM)/Powertrain Control Module ...

P0606 - OBD-II Trouble Code - RepairPal

https://repairpal.com > obd-ii-code-p0606
When the code P0606 is set in the Powertrain Computer, it means that the Powertrain Computer or PCM is failing its own self-check and has found problems with ...

P0606 OBD-II Trouble Code: PCM Processor Fault

https://www.yourmechanic.com > Articles
P0606 code definition PCM Processor Fault What the P0606 code means The Powertrain Control Module is sometimes referred to as the Power Control Module, ...

Starting in 2003 the battery lamp is controlled by the PCM. Could be a circuit failure between the alternator and the PCM. In circuit troubleshooting is required.

You have to fix the issue first, and then you clear the code using and OBD11 scanner.

P0629 means there is an issue with the "A" control circuit in the fuel pump often due too bad connectors/wires or a defective CAN bus

P0627 - Fuel Pump 'A' Control Circuit/Open

Possible causes

- Faulty Fuel Pump
- Fuel pump harness is open or shorted
- Fuel pump circuit poor electrical connection
- Faulty Fuel Pump Relay
- Faulty fuel pump control module (if applicable)

P0606 OBD-II Trouble Code: PCM Processor Fault

What the P0606 code means

The Powertrain Control Module is sometimes referred to as the Power Control Module, or the Engine Control Module (ECM); all of these names mean the same thing. The PCM is responsible for monitoring every aspect of the vehicle's engine and electrical system.

When the vehicle is started up, the PCM will perform a self-check to make sure that all of the engine's components are operating properly. If the result of this self-check indicates that there is a processor fault in the the PCM, it will store the P0606 diagnostic trouble code.

What causes the P0606 code?
•PCM wires that are broken, corroded, and/or frayed
•PCM connectors that are broken, corroded, and/or frayed
•Faulty PCM ground circuits and/or output devices
•Faulty Controller Area Network (CAN) bus communication

https://www.google.com/search?q=code+p0606+on+a+kubota+mx5200&rlz=1C1QJDB_enCA643CA644&oq=code+p0606+on+a+kubota+mx5200

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ETC - electronic throttle control problem .

P0606 - Powertrain Control Module (PCM) Internal Communication Error Description: P0606 indicates a register readback (PCM internal communications) error. Possible Causes:

• Damaged PCM.

Diagnostic Aids: Internal PCM failure. Install a new PCM.
For Electronic Throttle Control applications, an internal PCM failure, or an ETC system FMEM condition exists. Repairing the other DTCs can fix the P0606. Application Key On Engine Off Key On Engine Running Continuous Memory Vehicles With Electronic Throttle Control (ETC) The DTC is an indication of a failure mode in the electronic throttle control system, which includes the accelerator pedal position (APP) sensor, electronic throttle body (ETB), and powertrain control module (PCM). It is accompanied by other DTCs which provide repair direction. Diagnose and repair those DTCS, and the P0606 will not be reset. All others Make sure to check for aftermarket performance products before installing a new powertrain control module (PCM). If it is necessary to install a new PCM, refer to Section 2, Flash Electrically Erasable Programmable Read Only Memory (EEPROM).

Hi there:
P0606 is a internal computer fault. Sometimes extreme hot or cold weather will screw up a computer.




P0606 - PCM / ECM Processor Fault
This code is a fairly simple one. It basically means that the PCM/ECM (powertrain/engine control module) has detected an internal integrity fault in the PCM. When this code is activated it should store freeze-frame data that helps someone with an advanced code scanning tool to get information on exactly what was going on with the vehicle when the P0606 code was triggered.



Most likely the only symptom of a P0606 DTC code is the illumination of the "Check Engine Light" a.k.a. MIL (Malfunction Indicator Lamp).



Cause: In all likelyhood the PCM / ECM has failed.


Possible Solutions: As a vehicle owner there is little you can do to fix this code. The most common fix for a P0606 code is to replace the PCM, although in some cases re-flashing the PCM with updated software could possibly fix this. Be sure to check for TSB's on your vehicle (Technical Service Bulletins).


In all likelyhood the fix is to replace the PCM. This is generally not a "do-it-yourself" task, although in some cases it may be. We strongly recommend you have a qualified repair shop / technician do the work, one that has the capability to reprogram the new PCM. Installing the new PCM may involve using special tools to program the vehicle's VIN (vehicle identification number) and/or anti-theft information (PATS, etc.).


NOTE: This repair may be covered under the emissions warranty so be sure to check with your dealer as this may be covered beyond the bumper-to-bumper or powertrain warranty period.


Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

that sounds like a bad fuel injector system

P0601 - Internal Control Module Memory Check Sum Error

Basically that means that there is an interal fault in the Powertrain Control Module (PCM). There have been many reported PCM failures on Chrysler/Dodge products although it is possible for this to happen on any vehicle. In Dodge/Chrysler products, a P0601 trouble code means that a serial communication failed inside the computer at least 6 times.

Symptoms: Likely, no symptoms will be discernible to the driver, other than the illuminated Check Engine Light. Typically the engine runs fine, gauges work, etc.

Causes: A code P0601 in most cases means the PCM has gone bad. This is possibly due to a short-circuit inside the PCM. Or, if you disconnect the wires/connector from the PCM while the battery is still connected, that may also cause this code.

Possible Solutions: With a P0601 OBD-II trouble code, the most common fix is to replace and reprogram the PCM. In a few cases the dealer may be able to reflash the PCM and get it working. But more than likely the PCM will need to be replaced and reprogrammed (we recommend you take it to a dealership for this). The good news is it *may* be covered under your emmissions warranty. So even if you're out of bumper-to-bumper warranty or powertrain warranty, check your warranty guide or dealer to see if this is covered.

Other people have reported that they cleared the code only for it to return again and again. Keep in mind that most shops can replace the PCM but not all can program it.

Other PCM / ECM Codes: P0602, P0603, P0604, P0605, P0606, P0607, P0608, P0609, P0610.

Hope this help to solve it (remember rated this).

P0136 - O2 sensor malfunction, Bank 1 sensor 2." Drivers side exhaust down pipe after the Catalytic converter O2 sensor needs to be replaced."

P0606 - Control Module Internal Performance " Internal PCM failure." Replace the PCM.
For Electronic Throttle Control applications, an internal PCM failure, or an ETC system FMEM condition exists. Repairing the other DTCs can fix the P0606.

Good luck and hope this helps, keep me posted. Be glad to know you got your GMC running 100% again.

There is no P0606? P0602, P0603 or P0605. P0603 KAM interrupt can be a blown fuse or low battery, P0605 can be aftermarket chip / programing or PCM failure (diesels do have a reprogram for false P0605). P0602 is usually a PCM failure.