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P0306 Diagnostic Trouble Code Discussion for April 2018

Cylinder 6 Misfire Detected


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Trouble Ticket Help Requests for DTC P0306
Help Request Posted
2003 Toyota Avalon XL 3.0L Poor Idle Quality, MIL Lamp on VIN: 4T1BF28B63
P0306: Cylinder 6 Misfire Detected. Vehicle came to us running very rough with misfires on all bank 2 cylinders. We pressure tested the bank 2 converter and confirmed the converter wasn't plugged. We cleaned the maf and installed a upstream air fuel sensor on bank 2 with no change to the fuel tr...
April 13, 2018
2014 Land Rover Range Rover Sport HSE 3.0L Misfire, MIL Lamp on, High Idle @ start up VIN: SALWR2WF0E
P0306: Cylinder 6 Misfire detected. Customer states Check Engine Light is on, and very has very high idle when started. When the engine is cold started, idle revs over 3000 rpm and stays there for 20 seconds before going to 2000 rpm for a few seconds and then 800 rpm. Once engine is warm, th...
April 18, 2018
2011 Land Rover Range Rover Sport Supercharged 5.0L Poor Idle Quality, Misfire VIN: SALSH2E4XB
P0306: testing and results. Vehicle came in with P0171 code and fuel pressure codes. Replaced both high pressure fuel pumps along with high pressure fuel sensor and fuel codes went away but P0171 was apparent after numerous key cycles. Smoke tested engine and found passenger side val...
April 26, 2018
2011 Land Rover Range Rover Sport Supercharged 5.0L Poor Idle Quality, Misfire VIN: SALSH2E4XB
P0306: testing and results. Vehicle came in with P0171 code and fuel pressure codes. Replaced both high pressure fuel pumps along with high pressure fuel sensor and fuel codes went away but P0171 was apparent after numerous key cycles. Smoke tested engine and found passenger side val...
April 27, 2018