Hi,
The code is certainly coil related, but it doesn't indicate a bad coil. When this DTC is set, the PCM enters failure mode effects management (FMEM) which shuts down the injector for the associated cylinder in order to protect the catalytic converter.
The cause can be a few things. However, most commonly, we have a wiring issue. Here is what I need you to do first:
Use the 12-volt non-powered test lamp to verify the Start/Run key positions voltage at the ignition coil harness connector.
Disconnect the cylinder 1 coil pack. There should be two wires present, one is violet and the other is white with a violet tracer.
With the key in the run position (engine off), the violet wire should have power at all times. Confirm that for me.
If that is good, place the alligator clip of the test lamp on the positive battery terminal and probe the white wire with the violet tracer. Have a person crank the engine. The test lamp should strobe on and off.
Do this and let me know the results.
Take care,
Joe
See pic below.
Image (Click to make bigger)
SPONSORED LINKS
Thursday, March 23rd, 2023 AT 7:07 PM