Question about 2001 Dodge Ram 1500 Truck 2WD
I recently bought a new truck that I knew needed a little help.When I plugged in the OBD2 to the truck.These are the codes i pulled.
PO135-P0300-P0303-P0442-P0305...I plan on changing the plugs,wires and distributer cap(if needed)Any advice on what EXACIALLY to change.I know one code is for a o2 sensor(bank 1 sensor 1) and one is a EVAP EMISSION CONTROL SYSTEM LEAK(small)....the other 3 are misfires in cylinder 3 and 5.Snd one for a multiple.Please if anyone could clear the confusion so I dont spend more then I eed to please do.I primarilly do all my own work But theis has me a little nervous.thankyou
P0135 is a O2 sensor heater failure and if it is a 3.9 or 5.9 there is a PCM software update for that in a technical service bulletin. P0300 is a combined result of the two misfires. P0442 is a medium evap leak (p0456 is a small leak) which should be easy to find. What I would do first if the engine is running fine, is find and fix the medium leak. It is usually a split in one of the hoses where it has to swell to attach to another adapter or tube. Follow the lines from the purge solenoid back to the tank and you should find it. Look close at the lines at the test port along the way, it usually has a green cap on it. After you find and fix the evap leak, disconnect the battery to blow out all the codes and reconnect again. Then drive it to see if any codes come back. Some codes may be old stored codes that may no longer be a problem. Then address any codes if they come back. I hope this helps, if you have any questions feel free to ask.
Posted on Sep 05, 2009
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Posted on Jan 02, 2017
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When the service engine soon light (Also called the check engine light or engine management light) is turned on this is to alert you to the fact that Powertrain Control Module (computer) has detected a failure somewhere in the systems it controls you may not feel any difference in the way the engine runs, this can be the transmission or the engine or emission system, there are fault codes set in the modules memory for these faults. What needs to happen now is to have the powertrain control module scanned with a special tool called an OBD2 electronic engine control scanner or a OBD2 code reader. Once the code(s) are read then you must perform the diagnostics for each code and make the appropriate repairs based on the findings of the diagnosis that was performed, this is called doing "Pinpoint" testing.
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