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I have a pO645 PCM malfunction. according to dealer I need to replace the PCM at $79.95

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Posted on Jan 02, 2017

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moparownr
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SOURCE: Ford 2008 Exedition code P0645. Dealer says I need a PCM

P0645=A/C Clutch Relay Control Circut, This is the code, how it affects your vehicle I do not know, I take it your a/c does not work? Hope this helps.

Posted on Aug 05, 2010

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SOURCE: my PCM went bad according to the dealer .. 150k

The problem is any PCM other than the one installed will need to be programmed.

modulemaster.com may be able to rebuild for a couple hundred bucks but the car will be down for 10 days or so. If they can rebuild it its plug and play. No programmingwill be neede.

Posted on Apr 03, 2010

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What dose it mean when engin light falshes contstantly


Flashing Diag Code P0122
TP circuit low input
DETECTION CONDITION
• If PCM detects TP sensor voltage at PCM terminal 89 below 0.10 V after engine start, PCM determines
that TP circuit has a malfunction.
POSSIBLE CAUSE
• TP sensor malfunction
• Connector or terminal malfunction
• Open circuit between TP sensor terminal C and PCM terminal 89
• Short to ground circuit between TP sensor terminal C and PCM terminal 89
• Open circuit between TP sensor terminal A and PCM terminal 90
• Short to ground circuit between TP sensor terminal A and PCM terminal 90
• PCM malfunction

Flashing Diag Code P0123
TP circuit high input

DETECTION CONDITION
• If PCM detects TP sensor voltage at PCM terminal 89 is above 4.77 V after engine start, PCM determines
that TP circuit has a malfunction.
POSSIBLE CAUSE
• TP sensor malfunction
• Connector or terminal malfunction
• Open circuit between TP sensor terminal B and PCM terminal 91
• Short to reference voltage (Vref) supply circuit between TP sensor terminal C and PCM terminal 89
• PCM malfunction

Jun 26, 2014 | 2000 Mazda Protege

1 Answer

P0700 and p1698


P0700 DODGE - Transaxle Control System Malfunction. Tech notesP0700 is just and informative fault code that indicates a malfunction has occurred in the automatic transmission and the TCM has requested the PCM to turn on the Check engine light you must now have the dealer scan the TCM for more codes to resolve the problem.P1698 DODGE - DTC Detected in Companion JTEC Module, These codes are related and you need the dealer to scan the system.

Sep 30, 2012 | 2003 Dodge Caravan

1 Answer

P0601 internal controller malfunction


Isnt good; the bad news is, this is an internal failure. Sometimes you can clear the code and it won't return. But most of the time you need to replace the PCM. Something inside the logic get garbled and throws that code.

Good news...the PCM is an emissions related component. I believe it is covered under warranty for 8 years or 80,000 miles. Check with your dealer. Just like catalytic converters and such.

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.

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.

Hope this helps (remember to rating this answer and leave some testimonial comment).

Oct 08, 2011 | 2000 Chrysler Concorde

3 Answers

Van shut off in traffic and won't start. the odometer says P 0601. what does that mean


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.

Feb 05, 2011 | 2002 Chrysler Town & Country

1 Answer

Honda accord incorrect gear ratio code p0370


Honda P0370 - Timing Reference High Resolution Signal A Malfunction.

The optical sensor provides a high resolution signal to the Powertrain Control Module (PCM) by counting pulses on the sensor disk located in the injection pump. The high resolution is one of the most important inputs by the PCM for fuel control and timing. This test monitors the number of high resolution pulses which have been missed (not detected). It's based on a comparison between the number of pulses that were detected since the last pump cam pulse and the number of the pulses that should have occurred. There are approximately 64 high resolution pulses for every cam pulse.

Possible Causes:
- Open or short in the optical sensor circuit
- Optical sensor connector
- Damaged optical sensor
- Damaged PCM
- Damaged ECM

Possible Solutions:
- If damaged repair the optical sensor circuit
- Replace optical sensor
- Replace PCM
- Replace ECM

Not sure where you got incorrect gear ratio. This P0370 DTC is for what I have listed above.

Jan 19, 2011 | 1998 Honda Accord

2 Answers

What does the code p0442,p0456,p0700,p0645,p0481,p0340


CODE PO442 - EVAP SMALL LEAKED DETECTED. CODE PO456 - LEAK IN EVAP SYSTEM DETECTED. POSSIBLE CAUSES / VACUUM HOSE CONNECTIONS OR SWITCHES HAVE COME LOOSE OR MALFUNCTION / EVAP EMISSION SYSTEM HAS A LEAK / EVAP PURGE SOLENOID OPERATION HAS MALFUNCTION / NVLD SWITCH OPERATION HAS MALFUNCTION / CODE PO 700 - AUTOMATIC TRANSMISSION FAULT DETECTED .POSSIBLE CAUSE TRANSMISSION CONTROL MODULE RELATED SENSOR HAS SOLENOID IS DAMAGED OR HAS FAILED.TRANSMISSION CONTROL MODULE FAILED OR POWER CONTROL MODULE HAS FAILED.YOU TAKE VECHICLE TO DEALERSHIP THEY WILL TO SCAN TRANSMISSION. CODE PO645 - AC CLUTCH RELAY CIRCUIT MALFUNCTION . POSSIBLE CAUSE.INTERNALLY FUSED IGNITION SWITCH OUTPUT CIRCUIT IS FAULTY. AC RELAY CLUTCH CONTROL CIRCUIT IS OPEN OR IT IS SHORTED TO GROUND. AC RELAY CLUTCH POWER SUPPLY FUSED IGNITION CIRCUIT IS OPEN. AC RELAY IS DAMAGED OR IT HAS FAILED.PCM HAS FAILED. CODE PO481 - HIGH SPEED NUMBER 2 FAN RELAY CONTROL CIRCUIT. POSSIBLE CAUSE HI FAN RELAY POWER CIRCUIT IS OPEN FROM THE RELAY TO FUSED POWER.HI FAN CONTROL CIRCUIT IS OPEN OR SHORTED TO CHASIS GROUND. FAN RELAYS FAILED. PCM HAS FAILED. CODE PO340 - NO CAMSHAFT POSITION SENSOR CIRCUIT FAILURE. POSSIBLE CAUSE CMP SENSOR CONNECTOR IS DAMAGED OPEN OR IT IS SHORTED. CMP SENSOR SIGNAL CIRCUIT IS OPEN OR SHORTED TO GROUND OR TO BATTERY VOLTAGE OR 5 VOLT SUPPLY CIRCUIT. CMP SENSOR 5 VOLT SUPPLY CIRCUIT IS OPEN OR SHORTED TO GROND OR TO BATTERY VOLTAGE. CMP SENSOR GROUND CIRCUIT IS OPEN. CKP SENSOR IS DAMAGED OR HAS FAILED.PCM HAS FAILED. SOUND LIKE PROBLEM IS PCM GROUND WIRE BROKEN OR LOOSE OR PCM HAS FAILED.

Nov 16, 2010 | 2004 Dodge Intrepid

2 Answers

My PCM went bad according to the dealer .. 150k miles 01 dakota..price for replacement is over 1000.00/installed.. is aftermarket PCM cheaper?Can I put this in myself?


difficult to answer because of the immobilisor system, unless you get one from the scrapyard but you must have the chip out of the key and the transponder thats behind the ignition key under the shroud

Apr 03, 2010 | 2001 Dodge Dakota

1 Answer

Hi, i got the P2228 scan code, barometric pressure cicuit low. Somebody knows how can i fix it?


General Description
The barometric pressure (BARO) sensor is built into the engine control module (ECM)/powertrain control module (PCM), and
it monitors atmospheric pressure. The ECM/PCM estimates appropriate intake airflow from the manifold absolute pressure
(MAP) sensor output voltage and BARO sensor output voltage. If the BARO sensor output voltage is a specified value or
less, the ECM/PCM detects a malfunction and a DTC is p2228 stored. -- it is most likely a problem with the mass airflow sensor. but a problem like this should been seen at a dealer

Oct 25, 2009 | 2005 Honda Accord

1 Answer

I have similar problem


replace the speed sensor

Apr 09, 2017 | 2006 Toyota Camry

3 Answers

Electronic Throttle Control


DTC P2106 Throttle actuator control system-forced limited power DETECTION CONDITION
• The PCM monitors the throttle actuator control current when the ignition switch is on. If the control current is less than 8 A or more than 11 A, the PCM determines that the throttle actuator control system is under forced limited power. Diagnostic support note
• This is a continuous monitor (CCM). • The MIL illuminates if the PCM detects the above malfunction condition in the first drive cycle. • PENDING CODE is available if the PCM detects the above malfunction condition. • FREEZE FRAME DATA is available. • The DTC is stored in the PCM memory. POSSIBLE CAUSE
• Throttle actuator malfunction • Connector or terminal malfunction • Open circuit in wiring harness between throttle body terminal A and PCM terminal 1B • Short to power supply in wiring harness between throttle body terminal A and PCM terminal 1B • Short to GND in wiring harness between throttle body terminal A and PCM terminal 1B • Open circuit in wiring harness between throttle body terminal B and PCM terminal 1C • Short to power supply in wiring harness between throttle body terminal B and PCM terminal 1C • Short to GND in wiring harness between throttle body terminal B and PCM terminal 1C • PCM malfunction
and for the other one

the dealers need to reflash the powertrain module ( ETC ) ...

hope i'll not get that problem on my 04 hemi...

Dec 19, 2008 | 2004 Dodge Ram 1500

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