Any Ideas on all these Fault codes?

[n9oig]

P0069 Unknown ???????

P0193 Fuel Rail Pressure Sensor Circuit High Input

P0237 Turbocharger Boost Sensor A Circuit Low

P0340 Camshaft Position Sensor Circuit Malfunction

P0341 Camshaft Position Sensor Circuit Range/Performance

P0652 Unknown ???????

P2121 Unknown ???????

P2127 Unknown ???????

P2266 Unknown ???????

P2269 Unknown ???????



This is on my 2004. 5 3500 with 160K miles these have come up with 2 different episodes of the check engine light in the past 2 weeks.

 

[JVolpe]

My database show these definitions for the codes in question. With so many and so many different sensors involved I might think it is something with the computer itself or the primary connectors on the computer. Maybe one of the techs online can help, kinda outa my realm.



P0069 GENERIC MAP - Barometric Pressure Correlation (DTC reinstated)

P0652 GENERIC Sensor Reference Voltage B Circuit Low

P2121 GENERIC Throttle/Pedal Position Sensor/Switch D Circuit Range/Performance

P2127 DODGE Pedal Valve Position Sensor #2 Low

P2266 Water in Fuel Sensor Circuit Low

P2269 Water in Fuel Condition

 

[robertyoke]

an 04. 5 with 160,000 miles... ..... :--)

 

[CLAYTON]

n9oig. . no performance boxes or anything of the like? Something is definitly wrong

 

[robertyoke]

bad ground to ecm????

 

[SP Diesel]

Sounds to me like you have a wiring harness going bad that is allowing the 5v sensor reference voltage to go to ground. This will cause most of the codes you have listed above. Unfortunately this will be a tricky thing to troubleshoot.

 

[n9oig]

Oh yea I put on about 12K a month delivering new RV's to the dealers.



No boxes theres enough power to break things now.

 

[Windscreen]

n9oig, or anyone, any further update on this problem? I've got a similar one. The truck was sitting idling with the AC running to cool things down. Suddenly it started missing, surging, smoking, and making heavy diesel combustion noise. I shut it down and, after a prolonged crank, it restarted and did the same thing. Tried one more start cycle, same thing. Pulled the codes and went inside to look them up:

P2269 water in fuel

P2127 low voltage at the throttle validation switch

P0652 low voltage at the #1 sensor supply circuit

P0193 fuel pressure sensor voltage too high

P0069 boost key on rationality



Because of the WIF code, I drained the seperator and got about a tablespoon of water... pretty normal for what I get during a filter change. Attempted another restart and now the truck runs and drives fine! Later in the weekend, I checked codes again and got:

P2121 apps volts do not agree with idle validation signal

P0341 camshaft position sensor signal

P0237 MAP sensor voltage too low

P0193 fuel pressure sensor voltage too high

P2269 water in fuel

P0652 low voltage at the #1 sensor supply circuit

P2127 low voltage at the throttle validation switch

P2266 water in fuel sensor voltage too low



Dealer says no codes are active and its a case of bad fuel, but can provide no explanation for all the electrical code faults. They claim there is a TSB with a new calibration to prevent extraeous code faults, and reflashed my ECM with the "new" cal. I can find no TSB since 18-037-04, which I had done last fall at a different dealer (that backed my truck into a fence post... won't be back there soon).



I can explain some of the WIF codes because I pulled the WIF connector and tried grounding out the 5v side to see if that would recreate the problem. Diagnostic charts tend to suggest the 5v sensor supply got shorted to ground, but more than one code suggests 5v supply shorted to signal. So, I'm guessing either a sensor shorted out internally, bringing everything on that 5v supply to ground, or something internal to the ECM causing multiple signal lines to see the full 5v supply.



I've told the dealer I don't accept the "bad fuel" diagnosis and won't take the truck back until we get the zone service manager involved. Any other leads would be most helpful, as I know this electrical issue will resurface and strand me somewhere!



BTW - truck is 100% stock, except for fuel tank vent mod and a boost gauge.

 

[n9oig]

I guess I should have posted an update here is what was found.

The +5 volt line feeding the hi pressure switch on the AC which is hooked into the computer had rubbed against the AC line and was dead shorting the computer and causing a reboot the most prevalent code was P2509 Data loss sounds like a similar problem. id look for a wire rubbing somewhere.

 

[Windscreen]

While changing my oil & filter tonight I examined the wires going to the AC pressure switch closely and saw what looked like some heavy rubbing on the bundle (3 wires taped together). I removed the tape and found two spots where the +5 volt line (pink w/ yellow tracer) had been rubbing against the AC compressor. I could just see where the insulation had just barely been worn through to contact the wires and short out the PCM +5 volt supply.

#ad


The big connector in the picture is the 2 pin that controlls the AC clutch. The wires in question do NOT go to this connector, but a 4 place connector (only 3 terminals are used) just off the bottom of the picture.



I'll bet there will be many others who will experience this problem sometime as well.



BTW - the dealer I took my truck to told me the problem was bad fuel, despite al the codes set in the PCM!! #@$%!



Steve

 

[rlampright]

Broke down in Ogden with same Multi-code problem

Broke down in Fairmont MN, Boulder CO and Ogden UT with the same multi-code problem as described in this thread. Fault light would come on, engine would lose power, run ruff, make loud clanking noises like gen 1 and 2 engines. After 3 or 4 attempts to start the engine, it would run smooth as if nothing was wrong with it. Check engine light would stay on with the following codes present:

P0088

P0193

P0340

P0652

P2266

P0237

Dodge dealership in Fairmont found a loose battery cable that they said was causing the problem and sent me on my way. Got down the road 800 miles and the same problem occurred. The Dodge dealer in Boulder replaced the engine computer and sent me on my way. I got 600 miles down the road and the same problem occurred. I have been sitting in Salt Lake for 4 days waiting my turn in line to get my Dodge looked at so I thought I would check for similar occurrences on the TDR Forum.



I am hoping that these guys will look for a short in the 5 volt wiring harnesses as I have advised them to do based on this thread. I sure would hate to break next, half way across Nevada.



2003. 5 Dodge 2500 HO with 84,000 miles.

 

[n9oig]

The one code I dont see which is strange is the P2509 ECM/PCM data loss.



Kevin

 

[rlampright]

Problem fixed in Salt Lake

The tech in Salt Lake was able to duplicate the problem by driving my truck for about a hour before it re-occurred. He had a portable computer hooked up to record the event. Traced the problem to an intermittent short in the Turbo Sensor. He also removed the wiring harness and check every wire for chaffing or breaks. None found. Have since driven the truck 600 miles without re-occurrence. Keeping my fingers crossed!!!