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Old 07-03-2020
Marcus_J  Marcus_J is offline
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Default Suddenly codes all over
Hello,

Today when I tried starting our 2.7 crd 2002 I only got a click. When I kept trying to start it, it went on. It drives without a problem. The starting is the problem.

I checked the codes and I suddenly have a bombardment of codes. I find it weird these all came at once. I was thinking maybe it's the ECM. We have a place booked for monday so it's crap this happens right before the weekend.

P0100
P0190
P0340
P0460
P0641

It has a new battery and a full tank of diesel. I also replaced the PCB ages ago with the one from Jeepswj as I had p0702 error which fixed it.

From the manual I found the following. Doesn't this all have to do with the ecm? I am trying to learn.

P0460 FUEL LEVEL SENSOR CIRCUIT SIGNAL VOLTAGE TOO HIGH
P0460 FUEL LEVEL SENSOR CIRCUIT SIGNAL VOLTAGE TOO LOW

P0100 MASS AIR FLOW SENSOR SIGNAL VOLTAGE TOO HIGH
P0100 MASS AIR FLOW SENSOR SIGNAL VOLTAGE TOO LOW

P0190 FUEL PRESS SENSOR CIRCUIT MALF SIGNAL VOLTAGE TOO HIGH
P0190 FUEL PRESS SENSOR CIRCUIT MALF SIGNAL VOLTAGE TOO LOW
P0190 FUEL PRESS SENSOR CIRCUIT MALF SIGNAL VOLTAGE TOO HIGH OR LOW

P0641 SENSOR REFERENCE VOLTAGE A CKT VOLTAGE TOO HIGH
P0641 SENSOR REFERENCE VOLTAGE A CKT VOLTAGE TOO LOW

P0340 CMP/CKP POSITION SENSOR CIRCUIT - CKP DYNAMIC PLAUSIBILITY
P0340 CMP/CKP POSITION SENSOR CIRCUIT - CMP/CKP SYNC FAILURE
P0340 CMP/CKP POSITION SENSOR CIRCUIT - SIGNAL FREQUENCY TOO HIGH
P0340 CMP/CKP POSITION SENSOR CIRCUIT - STATIC PLAUSIBILITY
Last edited by Marcus_J; 07-03-2020 at 04:35 AM.
  #2  
Old 07-03-2020
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layback40  layback40 is offline
Grumpy Old XJ Dsl Owner
  
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Just a guess ~ bad earth?
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  #3  
Old 07-03-2020
Marcus_J  Marcus_J is offline
I just registered
  
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Default
Quote:
Originally Posted by layback40 View Post
Just a guess ~ bad earth?
Makes sense. I changed the headunit a month ago aswel since the OEM one had no more display. Maybe the ground there went wrong? It all worked perfectly till today.

Looking at videos and the manual now and tomorrow morning Ill go check with a multimeter.

Could the radio ground being the culprit on the car not starting.
Last edited by Marcus_J; 07-03-2020 at 07:08 AM.
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