Question about 1997 Plymouth Grand Voyager

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Hello, have a 97 Plymouth GV, 3.3L; took it to a chrysler dealer three months ago, diagnosed a PCM failure, it was still drivable but kept shutting down, esp in hot weather conditions (FL). Purchased a refurbished PCM as the dealer wanted $700.00 for a new one. After installing finding it still shuts down; i'm now trying to get the refurbished PCM switched at the parts store. Just need to know if there could be something else that causes the shutdown or what more I can do to try to salvage this vehicle..? thanks. Peter.

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  • Plymouth Master
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The PCM has to be Flashed to the specific car that it goes into,need more help get back to me Thanks Ray Flased means programmed to the VIN#

Posted on Aug 06, 2010

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Posted on Jan 02, 2017

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WHAT IS PO601 i know what it means, Internal Controller Failure.


It means that your powertrain control module in the engine needs to be replaced, and reprogrammed. Unfortunately you will have to go to a dealer, as a mechanic may be able to replace it, but not fix it. it may be covered under warranty by dealer, but you will have to check. Hope this helps.

May 29, 2014 | 2002 Chrysler PT Cruiser

1 Answer

Check engine light and airbag light came on; now car will not start


I have run into this problem a few times where the dealer replacing the sensor and a month later light back on, take car back it may need a program update and sensor may be bad or crank sensor may need replacing.
I would have the code scanned at a local auto parts store and if the code is the cam then take it back to dealer to see what has happened.
The car i was working on had a cam sensor problem, replaced the sensor and light came back with same code. sent to dealer and dealer said after market part was bad, car needed an oem part, so they replaced it and in a few days same problem . took car back and this time they installed a program update and so far so good.

Dec 19, 2012 | 2003 Chrysler Sebring

1 Answer

1997 Plymouth Breeze Engine keeps shutting off.


You need to do an OBD2 engine control module fault code test to see if the fault is recorded in the memory of the computer control module. Autozone and others do this testing for free.

Jun 24, 2017 | 1997 Plymouth Grand Voyager

1 Answer

Code p0601 on 2001 grand caravan


A doozy! And common to Chrysler Dodge products. The code means the computer detected an internal fault in the PCM. There have been many reported failures of the Program Control Module in Chrysler products.
However, if you took off the connector to the PCM while battery was connected, you may have set the code yourself.
It's pretty much a dealer fix: In most cases, the fix is to replace and reprogram the PCM. In a few instances, the dealer may be able to reflash the PCM and get it working again, but usually it needs replacing and reprogramming. It's probably not, but ask if it's still under emissions warranty.
If you use an independent shop to replace the PCM, make sure they can also program it. Good luck.

Nov 25, 2011 | 2001 Dodge Caravan

3 Answers

1997 plymouth voyager w/ codes: P0140 O2 sensor circuit no activity detected (bank 1(2) sensor 2


The Powertrain control module (PCM) will provide a .45 volt reference voltage to the Oxygen sensor. When the O2 sensor reaches operating temperature, it will generate a voltage that will vary depending on the oxygen content of the exhaust. Lean exhaust generates a low voltage (less than .45V) and rich exhaust generates a high voltage (greater than .45V). O2 sensors on a specific bank marked as "sensor 2" (as this one is) are used to monitor emissions. A Three-Way Catalyst (TWC) system (catalytic converter) is used to control tailpipe emissions. The PCM uses the signal received from Oxygen sensor 2 (#2 indicates aft of catalytic converter, #1 indicates pre-converter) to read efficiency of TWC. Normally this sensor will switch between high and low voltage at a noticeably slower rate than the front sensor. This is normal. If the signal received from rear (#2) O2 sensor indicates that the voltage has "stuck" between .425V to .474 V, the PCM determines this sensor is inactive and this code will set.
Potential Symptoms Your check engine light(CEL), or malfuction indicator lamp (MIL) will be illuminated. There will not likely be any noticeable drivability problems other than the MIL. The reason is this: The rear or post catalytic converter Oxygen sensor does not affect fuel deliver(this is an exception on Chryslers). It only MONITORS the efficiency of the catalytic converter. For this reason, you will likely not notice any engine trouble.
Causes The causes for a P0140 code are fairly few. They could be any of the following:
  • Shorted heater circuit in O2 sensor. (Usually requires replacement of heater circuit fuse in fuse block also)
  • Shorted signal circuit in O2 sensor
  • Melting of harness connector or wiring due to contact with exhaust system
  • Water intrusion in harness connector or PCM connector
  • Bad PCM
Possible Solutions This is a fairly specific problem and shouldn't be too difficult to diagnose.
First, start engine and warm up. Using a scan tool, watch the Bank 1, sensor 2, o2 sensor voltage. Normally the voltage should switch slowly above and below .45 volts. If it does, the problem is likely intermittent. You'll have to wait for the problem to surface before you can accurately diagnose.
However, if it doesn't switch, or is stuck then perform the following: 2. Shut off vehicle. Visually check the Bank1,2 harness connector for melting or chafing of the harness or the connector. Repair or replace as needed 3. Turn ignition on, but engine off. Disconnect the O2 sensor connector and check for 12Volts at the Heater Circuit supply and for proper ground on the heater circuit ground circuit. a. If 12V heater supply is missing, check the proper fuses for an open in the circuit. If heater circuit fuse is blown, then suspect a bad heater in the o2 sensor causing a blown heater circuit fuse. Replace sensor and fuse and recheck. b. If ground is missing, trace the circuit and clean or repair ground circuit. 4. Next, with connector still unplugged, check for 5 Volts on the reference circuit. If this is missing, check for 5 Volts at the PCM connector. If 5 Volts is present at the PCM connector but not at the o2 sensor harness connector, then there is an open or short in the reference wire supply between the PCM and the o2 sensor connector. However, if there is no 5 Volts present at the PCM connector, the PCM is likely at fault due to internal short. Replace PCM. ** (NOTE: on Chrysler models, a common problem is the 5Volt reference circuit can be shorted out by any sensor on the car that uses a 5 Volt reference. Simply unplug each sensor one at a time until the 5 Volts reappears. The last sensor you unplugged is the shorted sensor. Replacing it should fix the 5 Volt reference short.) 5. If all the voltages and grounds are present, then replace the Bank 1,2 O2 sensor and re-test.

May 26, 2011 | Plymouth Voyager Cars & Trucks

1 Answer

Check Engine light, had it diagnosed, PO601, Internal Controller Failure


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. goodluck
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Jan 24, 2011 | 2000 Chrysler Town & Country

2 Answers

1999 chrysler 300m shaft cam sensor is bad.


did you check the ASD relay,located under the hood in the fuse and relay box. hope this can help.

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2 Answers

My 2.5 litre 97 Cirrus will not start after PCM replacement


check or replace the ASD relay, located in the power distribution center. Hope this can help, please put some rating.

Apr 20, 2010 | 1997 Chrysler Cirrus

2 Answers

97 plymouth voyager. no spark to cylinders


WELL I AM LOOKING AT AUTOMATIC SHUT RELAY BAD OR THE BAD COIL POWER TRANSISTOR.YOU WILL NEED A SCANNER TO TELL YOU IF YOUR CMP SENSOR OR CKP SENSOR IS WORKING.

Mar 01, 2010 | 1997 Dodge Caravan

1 Answer

Bad pcm speedometer death odometer freeze engine won't stay running for more then 2 sec


You replaced the BCM with a junk yard one , it probably needs to be reconfigured an programmed . Dealer only . In my thrity years as a automotive technician i have seen this , people changing parts without know what they were doing . Take it to a qualified repair shop .
Information for the speedo an odometer come over the CCD bus from the BCM ! I bet you have no idea what the CCD bus is ? You have no clue as to how this vehicle works .
Chrysler CCD Chrysler Collision Detection Data Bus carprog

Mar 13, 2017 | 2006 Plymouth Breeze

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