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What is tcm po888 code means - 2004 Chrysler Voyager

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  • Jeffrey Turcotte
    Jeffrey Turcotte Mar 13, 2011

    transmission control module is having a problem with the feedback circuit and is unable to monitor internal functions of the transmission.



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Code P0888 = relay output always off

this code refers to the transmission control relay output circuit in the power control module, when the relay is commanded to turn on the PCM is not seeing the relay power on, most of the time when we see this code, it can be cured by doing a re-flash on the power control module, this has to be done by the dealer.

Posted on Mar 13, 2011

  • Gary Lippus Oct 06, 2012

    we have got the same problem and have had the reflas cleared and we can drive it for about 1 mile and then it happens again



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Does that mean a trans repair shop
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Have you Googled your vehicle,it's transaxle
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DTCP0888 for All Makes
Category: Powertrain
Definition: TCM Power Relay Sense Circuit

Definetivelly you'll need visit your dealer... this code refers to the Transmission Control relay output circuit in the PCM (Power Control Module), when the relay is commanded to turn on the PCM is not seeing the relay power on, most of the time when we see this code, it can be cured by doing a re-flash on the Power Control Module.

Hope this helps.

Sep 16, 2011 | 2001 Chrysler Voyager

3 Answers

Car does not run ,I check the code ,it is P0700

Because it is not starting, you should replace the Crankshaft sensor (above the oil filter, back of the engine)-it will cause a P0700-I have a 99 SL2, 178,000 miles

DTC) CODE # P0700....Transmission Control System (MIL Request)
Translation: Transmission Control Module (TCM) Malfunction or Failure. P0700 Information Code The Transaxle Control Module (TCM) monitors the malfunction of sensors and actuators relating to transaxle control. If any malfunction is detected, the TCM informs the PCM by sending a signal (P0700 code). P0700 means that a code has been set in the TCM. This code is for information ONLY. If this code is present, check for transaxle codes. So basically, the P0700 code is telling you to check the TCM for a transaxle DTC. The TCM can not turn on the check engine light so it has the PCM do it. The dealer probably saw the code P0700 and went to the TCM and pulled out the code stored there telling them the Transmission Solenoid Assembly (TSA) is bad. This is a good example of understanding what the codes actually mean. If the manual you looked at said the TCM is bad and to replace the TCM when you see a P0700, then it is wrong.

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