Mastering P0351 The Ultimate Guide to Ignition Coil Malfunctions

A P035X code for every cylinder leaves me to believe you need to start looking for common power and ground circuit problems. It started up but running horribly with multiple misfire codes and P0351 Ignition coil primary secondary. So here is what I have done over the past month. The code comes on and the engine is running smooth; the fuel injector pulses are consistent on all cylinders; there were no misfires; the fuel trim is within ... The P0351 DTC is seen when the ignition coil A primary or secondary circuit has a malfunction. The engine control module is looking for specific ... I was a block from home so I took it easy and made it home. I pulled the codes and got a P0351 error code (Ignition Coil A Primary/Secondary ... On a 2007 ES350, getting a Check Engine light with a code of P0351. What is this code? I thought it might be an O2 sensor. The only thing left is to check the ground wiring (control circuit) from the negative side of the coil to the PCM for breaks or damage. Fault detected when the engine is running. Check for 0.85 to 1.15 ohms between engine connector pin 1 and ECM connector pin A-41. Check for 12 volts on pin 2 ... It's showing an error code "P0351 Ignition coil 1 circuit malfunction". Tune ecu shows the voltage at 11.7v but connecting my multimeter to the battery shows ... PO351 can be a indicator of a pcm on the way out, specifically the coil driver. It can also be loose pins in the connector of the coil or pcm ...