P0354: Ignition Coil "D" Primary/Secondary Circuit
P0354 means Ignition Coil "D" Primary/Secondary Circuit. The engine computer has detected a fault in the primary or secondary circuit of the ignition coil for cylinder 4.
CodeP0354
SystemIgnition
SeverityHigh
TypeGeneric powertrain
Can I keep driving? Limit driving and diagnose promptly. Continued driving can cause damage, stalling or limp mode.
Common symptoms
- Check engine light on
- Misfire on cylinder 4
- Rough running and loss of power
Possible causes
- Failed ignition coil for cylinder 4
- Damaged coil connector
- Wiring fault between the coil and engine computer
- Engine computer coil driver fault
How to diagnose P0354
- Inspect the coil connector and wiring.
- Swap the coil with another cylinder and see whether the code follows.
- Check coil supply voltage and the trigger signal.
- Check for P030x misfire codes on the same cylinder.
What the code means, digit by digit
PPowertrain0Generic (SAE) code3Sub-system54Specific fault
Generic codes have the same definition on every OBD-II vehicle (petrol cars from model year 1996 in the US, 2001 in the EU; diesels later). Manufacturers can add their own enhanced codes; those are not listed here.
Related codes
- P0353 Ignition Coil "C" Primary/Secondary Circuit
- P0355 Ignition Coil "E" Primary/Secondary Circuit
- P0352 Ignition Coil "B" Primary/Secondary Circuit
- P0356 Ignition Coil "F" Primary/Secondary Circuit
- P0351 Ignition Coil "A" Primary/Secondary Circuit
- P0357 Ignition Coil "G" Primary/Secondary Circuit
- P0358 Ignition Coil "H" Primary/Secondary Circuit
General guidance only. Fault codes describe what the engine computer saw, not which part failed: confirm with testing before replacing parts, and follow the vehicle's service information.