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P1391 Diagnostic Trouble Code Discussion for August 2004

CKP Or CMP Sensor Signal Intermittent


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Trouble Ticket Help Requests for DTC P1391
Help Request Posted
2000 Dodge Caravan 2.4L No Start VIN: 2B4FP25B14
P1391: CKP Or CMP Sensor Signal Intermittent. ... a no start condition and a code p1391 stored in memory. In the scanner data mode the cmp/ckp sensor would come out of sync and the 2 sensors would alternate with a lost signal. Individual checks on the sensors checking for the 8 volt reference and ground t...
August 02, 2004
1997 Jeep Cherokee SE 4.0L MIL Lamp on VIN: 1J4FT28S9V
P1391: CKP Or CMP Sensor Signal Intermittent. ... from our other tech who replaced the crank sensor and wires. (plugs: champion platinum were replaced by customer). The other tech says there was a misfire code in addition to the P1391 and P0340. After replacing wires no misfire code. This is one of my bes...
August 12, 2004