2002 wrx p0301 error code

MY wrx is throwing the p0420 p0171 p0301 p0302 p0303 p0304 where can i start to figure out whats wrong car doesnt idle rough and just installed an cat less exhaust system. read more Mike V. The car came in for check engine light. It had two codes first was p0301 and p0303. They are misfire codes. We noticed it had bad plugs and ignition wires. 06 Wrx TR is throwing P0301, P0302, P0303, PFFE codes. Car ran fine before I dropped it off at a body shop who let it sit for a month and a half. New fuel pump install a week ago. Hi Phil, Thought all version 6 Impreza' s had 278 hp except the 300 hp ( Concept Electra one) though the actual production version the S2 hp as standard. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder 1.

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    Code error

    This diagnostic trouble code ( DTC) is a generic powertrain code, which means that it applies to OBD- II equipped vehicles. Although generic, the specific repair steps may vary depending on make/ model. A P0301 code means that the the car' s computer has detected that one of the engine' s cylinders is not firing properly. I got a P0303 code ( this is on my N/ A but I don' t think a turbo would matter in this case) straight after my car get its head gaskets replaced at a shop, misfire on cylinder 3. 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX& WrxSTI, SVX ; Mis- fire Codes P0301 & P0302. and so for the millionth time I hook up the code reader. Jul Location CA, US Posts. is the MAF trick doable on the wrx model? Im getting a misfire code on all. PSM WRX Wagon slower than ever i just throught a cel, but its not blinking.

    and i checked the codes and they are P0301, P0303, AND P0300. how hard was it to change the spark plugs? Wires look great ( OEM Subaru) and I believe they were changed at 60k but just to double check, I swapped the cylinder 4 wire with cyl. 2 and cleared the code. Code came back about 5 miles later as cyl 4 misfire ( P0304). The P0304 code is caused by a misfire on the number four cylinder. The Misfire monitor diagnostic is based on variation in crankshaft velocity. The PCM determines this information using the crankshaft position sensor and camshaft position sensor. 0L turbo WRX engine used in all 1999 to current WRX models EJ207 = 2. 0L turbo WRX STi engine used in all 1999 to current STi models EJ255 = 2. 5L turbo engine used in US Forester XT & Legacy 2.

    5L turbo models ( + some overseas). For example, if you have the P0300 code along with P0171 - System too lean, there is a good chance that the misfire is caused by the lean air/ fuel mixture that initially triggered the code P0171. Once the problem caused the code P0171 is fixed, the misfiring will likely go away too. Archive] Need quick help? Troubleshoot the problem here. Subaru Trouble Code Info Retrieving Trouble Codes 96 & later are OBD2 systems There are self- diagnositic connectors on all models, when connected with the key ON ( engine off), flash trouble codes on the LED light of the oxygen moniter of the ECU. When diagnosing a P0304 code, it is important to record the freeze frame information and then duplicate the code setting conditions with a test drive. Pay close attention to the engine load, throttle position, RPM, and road speed because a P0304 ( which is a specific misfire) can sometimes be difficult to detect. Got the ap out checked to the code it came up P0171 system to lean bank 1. So I cleaned the maf sensor and continued to check it out. I found the hose clamp on the air duct hose that connects the ic to the tb was really loose and the back worked its self off a little.

    Same issue P0301 - so not injectors. I agree that tight or burnt exhaust valves should not result in a " miss" but since I' m not familiar with these cars ( my engine experience is restricted to 2- stroke bikes and older DOHC motorcycle engines) nor how the computer interprets the input it gets. r/ Subaru is a family friendly ( to a degree) subreddit. Attempts at trolling or creating mischief ( starting flame wars over cambered vehicles ) will not be tolerated. 1st offense is a removal. 2nd offense is a 24 ban. 3rd offense is a 30 day ban. 4th offense is a perma ban. WRX OwnersWRX OwnersWRX OwnersWRX OwnersWRX Owners Turn the Ignition key to the ‘ OFF’ position. Next, turn the ignition to the ‘ ON’ position but do not start the engine. Trusted provider of automotive service information including cost estimates and money saving tips.

    Become educated on automotive repair. This is a discussion on IF YOU HAVE A MISFIRE CODE, PLEASE READ THIS! within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Originally Posted by Lionheart153 is the MAF trick doable on the wrx model? Hi everyone, Turned on my car the other day and threw a CEL and a flashing cruise. When I pulled the code it read P0301 - Cylinder 1 Misfire. I' ve tried trouble shooting it by switching out Cylinder 1' s spark plugs with Cylinder 3' s and also the coil- packs and then clearing the code. If a check engine light comes on and a code number P0325 Knock sensor circuit is set, and then diagnosed by a pro, not a code scanner at your local parts store, the P0325 should be satisfied once the properly diagnosed condition is repaired causing the code P0 325. P0031 trouble code definition. P0031 is the code for HO2S Heater Control Circuit Low ( Bank 1 Sensor 1) What the P0031 code means. P0031 code means for the engine to run correctly, the engine exhaust must have a specific air- fuel ratio of 14. 7 to 1 as signaled by the heated oxygen sensors ( HO2S) which detect the oxygen content of the vehicle exhaust. p0301, p0302, p0303, p0304 Subaru misfire problems can affectSubaru impreza, and Forester 2. 5L, and also soemLegacy and Outback vehicles. The Subaru misfire can be related to the ignition coil.

    Check the fuel filter. Check fuel pressure. Cylinder 1 and 3 are the right side of the engine. 2 and 4 are the left. Cylinder 2 is at the end of the fuel rail circuit and has the pressure regulator above it. Subaru Check Engine Light Codes. Welcome to the Subaru Check Engine Light codes page. Below you will find the most complete list of Subaru trouble codes available. Trouble shooting a misfire, Code P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308. How I fixed My code. Diagnose and Repair Misfire Diagnostic Codes. Subaru Check Engine Light and Code # P0420 Explained By Justin Stobb on January 18, in All Wheel Drive Auto News, Featured, Subaru Repair Seattle If the check engine light comes on in your Subaru there is always a corresponding code set in the computers memory. The simplest way for an inexperienced mechanic to retrieve codes is to write the codes down in a sort of Morse Code ( dots and dashes), and start a new line when you get a 1. 8 Second pause ( for NEW code), and then add the actual numbers up after code retrieval is completed. The code doesn' t indicate what part to replace, but rather points to a sensor or system that malfunctioned.