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Scan tool no communication. finally got some history codes 52 and 109 ecm failure ?
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asked
Nov 3, 2018
by
Paul C Padilla
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104
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Ecm no communication. Car runs really bad!!. needs a cat but i finally got a code 52 and code 109. Is this ecm failure
Vehicle:
95 olsmobile aurora
ecm
communication
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Nov 5, 2018
by
Reynaldo
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Code 52 and 109 these code together, this a loss of power or the keep alive memory power, You set this code when you remove power to the PCM. There is a PCM fuse that has to be checked, then there is the PCM ignition fuse, if those fuse are open you set a Code 52 and 109 and neither of these will turn the CK ENG LT on. This vehicle is a OBD 1 it will not keep code it gets erased the moment you turn the key off. This is not enough to say you need a ECM.
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