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P0303 Diagnostic Trouble Code Discussion for September 2019

Cylinder 3 Misfire Detected


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Trouble Ticket Help Requests for DTC P0303
Help Request Posted
2012 Volkswagen Eos Komfort 2.0L Misfire, MIL Lamp on VIN: WVWBW7AH4C
P0303: Cylinder 3 Misfire. Thanks in advance to this very helpful community. This well kept, dealer-serviced low mileage EOS was brought in with the concerns of an oil leak and a check engine light. The oil leak was an easy fix. The vehicle was serviced at a dealership less than 2,0...
September 21, 2019
1998 Buick Riviera 3.8L Misfire VIN: 1G4GD2211W
P0303: Cyl 3 misfire. Have what appears to be a dead miss on cylinder 3. Originally i changed plugs and wires for a history cly 4 misfire. Then did a crack variation relearn and i did a mass air flow for excessive fuel trim. Drove the car and it seemed well, fuel trims were wit...
September 23, 2019
2008 Mazda 3 Mazdaspeed 2.3L Misfire, MIL Lamp on, hard cold start VIN: JM1BK34M08
P0303: misfire cylinder 3. ... scanned codes P0300 random misfire. performed visual inspection found charge air pipe off. reconnected pipe and smoke tested the system. verified no leaks found. cleared codes and drove. no codes returned. started vehicle next morning and vehicle had a...
September 23, 2019
2013 Ford Flex Limited 3.5L Misfire VIN: 2FMGK5D84D
Attention FORD Gurus! This car sets misfire codes only when driving at Wide Open Throttle above 5000 RPM's. You do not feel a misfire at all. I swapped coil and plug with cylinder 5 and no change in code. I unplugged the alternator to eliminate RFI. Mode 6...
September 26, 2019
2000 Honda Civic EX 1.6L Misfire VIN: 1HGEJ8143Y
... codes p1399, p0300,p0301,p0302,p0303 & p0304. Found the timing to be right on the money....
September 27, 2019