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Car Forum / Dodge / Dodge Cars / August 20082001 Caravan code P0202
I have a 2001 Dodge Grand Caravan Sport that gives me a p0202, which is injector circuit malfunction #2. It runs very rough. My question is this, can I disconnect the wiring from each injector to see if it changes the idle. If I find one that does not change the idle, and I test it with a noid light to make sure it getting the proper signals, does this mean the injector needs replaced? I also have other codes that come up P0122, P0123, and P1478. Any help would be greatly appreciated. Terry > I have a 2001 Dodge Grand Caravan Sport that gives me a p0202, which > is injector [quoted text clipped - 9 lines] > > Terry The first thing to do is clear all the codes and start over, P0122 is a TPS voltage low fault and the P0123 is a TPS high voltage code. This may have been set if you disconnected something with the key on. As far as the p0202 code goes, there is no reason to disconnect each injector at a time. The p0202 means it is the #2 injector circuit!! Glenn Beasley Chrysler Tech Thanks Glenn. I reset the codes started the van and it idled very rough. It even died, but it did restart. I turned it off and now the codes are as follows: P0202 Injector #2 control circuit P0122 Throttle Position Sensor Voltage Low P0106 Barometric Pressure Out of Range P1478 Battery Temp Sensor Volts Out of Limit What do I try now? I assume that the first code listed, the injector may cause the some of the other codes. Is this wrong? In article <0bfc434e-3045-44e5-9851-b7ca4359c7c5@d45g2000hsc.googlegroups.com>, > Thanks Glenn. I reset the codes started the van and it idled very > rough. It even died, but it did restart. I turned it off and now the [quoted text clipped - 4 lines] > P1478 Battery Temp Sensor Volts Out of Limit > What do I try now? Diagnosing the 32 injector circuit. Is there continuity on both wires between the PCM and the injector? Is there 12 volts at the injector? Is the PCM pulling the injector to ground? Is the #2 injector's resistance in spec? > I assume that the first code listed, the injector > may cause the some of the other codes. Is this wrong? Yes. No relation between the #2 injector and the TPS. No relation between the #2 injector and the MAP sensor. No relation between the #2 injector and the battery temp sensor. > In article > <0bfc434e-3045-44e5-9851-b7ca4359c7c5@d45g2000hsc.googlegroups.com>, [quoted text clipped - 21 lines] > No relation between the #2 injector and the MAP sensor. > No relation between the #2 injector and the battery temp sensor. Is there more to this vehicle that you aren't saying> has the vehicle been in an accident? fire or other kind of mishaps? The injector fault is easy to test. make sure you have 12 volts at the injector as the vehicle is running and make sure you get a ground signal on the other wire. if not trace them back to the PCM.The same goes with the TPS fault. If you are getting a low voltage fault you need to check for 5 volts at the TPS for proper voltage. It could be shorted to ground or open. The TPS sensor could also be bad, the sensor wire form the TPS could be shorted to ground. The Trans controller could also cause this problem if the TP signal is shorted. This is the same as the map sensor. Have you done something recently on this vehicle that may have caused this problem because these faults do not appear to be related < Have you done something recently on this vehicle that may > have caused this problem because these faults do not appear to be related- Hide quoted text - > > - Show quoted text - The vehicle has not been in an accident, but I did change out a bad altenator on it about 3 weeks ago. Thank for all the suggestions. I'll try a few, but some seems a bit over my head. Thanks Terry < Have you done something recently on this vehicle that may > have caused this problem because these faults do not appear to be related- Hide quoted text - > - Show quoted text - The vehicle has not been in an accident, but I did change out a bad altenator on it about 3 weeks ago. Thank for all the suggestions. I'll try a few, but some seems a bit over my head. Thanks Terry Well if the problem happened after this repair was made you may want to go back and check over your work for loose connections/pinched wires. By any chance was this vehicle jump started with a backwards connection? Glenn > Well if the problem happened after this repair was made you may want to go > back and check over your work for loose connections/pinched wires. > By any chance was this vehicle jump started with a backwards connection? > > Glenn We made a long vacation trip of about 2300 miles with no problem in the van after the altenator was changed. The vehicle has never needed jumped. However, I did clean the battery termanials (positive very corroded) after it started running rough and codes were comming up with some low and high voltage problems. Thanks Terry Thanks all for the help. I took it to local mechanic and all codes related to one, the throttle position sensor. The total bill $145 and runs great with no more codes. Its great to have a good mechanic you can trust. Terry On Tue, 19 Aug 2008 10:46:39 -0700, tsmith wrote: > I also have other codes that come up P0122, P0123, and P1478. Any help > would be greatly appreciated. As I already said to your identical question in the other thread: JFGI.  Signature"Ubuntu" -- an African word, meaning "Slackware is too hard for me". The Usenet Improvement Project: http://improve-usenet.org |
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