P2302 Fault Code in 2004 Chrysler Town & Country Van: Coil Circuit 1 Insufficient Ionization Diagnosis and Repair
I'm currently troubleshooting a 2004 Chrysler Town & Country van that has been throwing fault code P2302 — indicating insufficient ionization in coil circuit 1. Initially, the issue was traced to a faulty spark plug coil; after replacing both the coil and the PCM (Powertrain Control Module) along with the harness, the vehicle ran smoothly for a short time. However, shortly thereafter, misfires were observed on cylinders 5 and 2. Upon inspection, I found that the new coil had a crack between cylinders 5 and 2, which led to a driver-side misfire. The PCM was then replaced again, but the P2302 code has returned, along with persistent misfires on cylinders -1 and 4. At this point, I'm unsure whether the remanufactured PCM units I've purchased are defective or if there's another underlying issue. Could anyone provide insight into potential causes of recurring P2302 codes in this model? Are there known issues with reman PCMs in 2004 Chrysler Town & Country vans? Any additional diagnostic steps or recommendations would be greatly appreciated.