Strange noises from under the bonnet? Spooky. Happy Halloween from Auto Veteran: may your only scares be costumes.
DTC codes / P02xx · Fuel and air metering (injector circuits) / P0272
P0272 indicates that the powertrain control module has detected an abnormal contribution from cylinder 4 to engine power, typically by monitoring crankshaft speed fluctuations; a weaker or stronger than expected power stroke from that cylinder sets the code. The computer compares each cylinder's effect on crankshaft acceleration and flags cylinder 4 when its balance value falls outside the acceptable range.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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