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P0301 Diagnostic Trouble Code Discussion for August 2019

Cylinder 1 Misfire Detected

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Trouble Ticket Help Requests for DTC P0301
Help Request Posted
2003 Toyota Corolla CE 1.8L MIL Lamp on VIN: 1NXBR32E73
P0301: Cylinder 1 Misfire Detected. ... current. p0171 and p1315 current. long term fuel trim high. 25 at idle goes up to 44.5 off idle and while driving. short term fuel trim normal, between -7 and 7 switching constantly. map has good readings around 2g a...
August 02, 2019
2011 Jeep Grand Cherokee Limited 3.6L Poor Idle Quality, Misfire VIN: 1J4RR5GGXB
Thanks in advance, had this jeep in a little while ago with p0420 code and fan circut code. i replaced b1 cat and sent to dealer for front control module and program. about a month later came back to me with misfire codes on 1,3,5 and p219a. i replaced bot...
August 15, 2019
2009 Dodge Avenger SXT 2.4L Misfire, MIL Lamp on VIN: 1B3LC56BX9
P0301: cylinder 1 misfire. hello all. have this avenger driving me a bit nuts. it was dropped off and I scanned pcm, found codes above. it was also running on 2 cylinders, #2,#3. put in sensor and no more ckp codes. scoped coils and all 4 are firing great with a nice secondary burn ...
August 21, 2019
2001 Toyota Celica GT 1.8L No Start, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: JTDDR32TX1
P0301: Cylinder 1 Misfire Detected. The car came in running rough scanned and found the codes above.Plugs were gas fouled and replaced them, Had known good AF sensor on shelf with no change ( Also ordered new Denso sensor didn't help, Fuel pressure looks good, Checked grounds on right fender...
August 27, 2019
2005 Subaru Forester XS L.L. Bean Edition 2.5L Misfire VIN: JF1SG67635
P0301: Cylinder 1 Misfire Detected. Car towed in for poor performance...started and ran for us... code for #1 cyl misfire returns after clearing...sprayed coil with moisture produced serious misfire... replaced coil with Subaru part and ign wires & plugs with quality parts... continue to...
August 30, 2019