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generic p1391 is CMP or CKP Sensor Signal Intermittent Conditions. p1391 code Ask com YouTube Search this link is codes more for chrysler ---the following codes pertain to your vehicle p1393 is Glow plug circuit low input, bank #2 (left) Open/short/miswired circuit, ... ---- p1391 is Glow plug circuit low input, bank #1 (right) Open/short/miswired circuit, faulty relay, glow plugs. An Introduction to the Power Stroke Glow Plug System this link will explain and assist in repair
You may need a shop manual for this one.
Code 1391 means the crank sensor or cam sensor signal is not steady or dead at times.
The distributor acts as the cam sensor, so it could be that or the crank sensor, or a problem with the wiring harness.
P1391 - Electronic Brake controll Rough Road Data Unusable. You need a factory repair manual and a live data scanner to diagnose repair this problem. The cause is far from cut and dry
P1391 Intermitant loss of cam or crank; P1297 No change in map from start to run; P0108 Map sensor voltage too high; p1492 Battery temp sensor too high.
P1391(M)
Intermittent Loss of CMP or CKP
Loss of the Cam Position Sensor or Crank Position sensor has occurredi know that you may not want to take this to a good mechanic, but it may be something simple, or it could be bad.
Hi, the fault code you received from the computer says "intermittent loss of signal from "either" the CAM OR Camshaft sensor. You need to figure out which sensor is failing or if there is a problem with the wiring harness to ensure that it is not a wiring issue. if you need further assistance please let me know. Thanks, Midwest-tek
P1391 is a timing referance code, your timing is crucial to engine operation, this can be caused by the crank and or cam position sencer. If you changed these and the problem still exists, maybe you got ahead of yourself. These two (2) sencers run in conjuntion with each other, if one is out of whack for any length of time, The ECU will trip and pretty much say to itself, The Timing chain is broken, fix me! Also note that these sensers are typacaly LOW FAIL items. So on especially vehicles with the 2.5Ltr. V6, If you suspect a sencer is bad and you change it, might be a good idea to change both sencers and the timing belt since like all belts it may be streching.
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