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P0601 Diagnostic Trouble Code Discussion for August 2009

Control Module Read Only Memory

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Trouble Ticket Help Requests for DTC P0601
Help Request Posted
1999 Cadillac DeVille Concours 4.6L Poor Idle Quality, MIL Lamp on, high idle VIN: 1G6KF5496X
P0601: Loss of PCM memory. loss of pcm memory code P0601, high idle and trans wont shift trans codes 0716 and 0717...testing shows resistance of input speed sesor @ 1580 ohms, with engine running will develope over .5 volts ac, checked @ PCM connector...previous codes before PCM replace...
August 05, 2009
2002 Jeep Grand Cherokee Laredo 4.7L No Start, Cuts out VIN: 1J4GW58N42
P0601: PCM Random Access Memory Failure, Self-Test Failed. Hi everyone, I have this jeep that is fighting me. Last Friday it came in and ran terrible no codes all the scan data looked good and both CKP/CMP scoped fine. When I do get it running it surges between 200 to 2000 RPM with the my foot on the Gas.All O2's are ...
August 17, 2009
2001 Chrysler Sebring LXi 2.7L Excessive Emissions, MIL Lamp on VIN: 1C3AL56U51
P0601: Internal Memory Checksum Invalid. ... around is a eaccuing code p0601. replaced the pcm in early july for same code. after returning to customer code returned in two days. have had the pcm sent back with warrenty and have another to replace it. i was told bad battery connections could cause co...
August 26, 2009