P0354 Diagnostic Trouble Code Discussion for December 2009
Ignition Coil 4 Control Circuit Malfunction
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| Help Request | Posted | |
| 2005 Mercury Montego 3.0L Misfire, MIL Lamp on VIN: 1MEFM421X5 P0354: Ignition COP 4 Primary/Secondary Circuit Malfunction. ... customer stating engine chuggles under load. Code (P0354 - ignition coil D circiut primary/secondary) found in memory. Tested coil with vantage pro and found windings weak. Replaced all plugs & coils with after market parts, and vehicle ran fine for a ... |
December 17, 2009 |
