This code is calling out a problem with the coil, plugs or wires. Please remove these and reinspect, also on the coil and wires please use AC Delco parts to ensure quality. Cheap ignition parts can cause this problem
P2302-IGNITION COIL #1 SECONDARY CIRCUIT-INSUFFICIENT IONIZATION
WHEN MONITORED
Engine Running.
SET CONDITION
If PCM detects that the secondary ignition burn time is incorrect or not present an error is detected. One Trip Fault.
Here are a few guides to ehlp you get the problem fixed.
https://www.2carpros.com/articles/how-to-change-spark-plugs
https://www.2carpros.com/articles/engine-misfires-or-runs-rough
One problem will affect both cylinders.
Please let us know what happens.
Cheers, Ken
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Sunday, December 3rd, 2017 AT 5:35 PM