Error code
OBD2 P0354
OBD2P0354
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Ignition Coil 'D' Primary/Secondary Circuit.
Severity
moderateCan drive, but may experience poor performance and increased emissions.
Summary
P0354 indicates an issue with the ignition coil 'D' primary/secondary circuit on cylinder 4 of your engine.
Symptoms
- Illuminated check engine light
- Ignition misfire
Common Causes
- Faulty ignition coil
- Problem in the ignition coil circuit
- Issue with the PCM
Diagnosis
- Visually inspect the coil pack and its connector for damage or corrosion.
- Swap the faulty ignition coil with another cylinder's coil to isolate the issue.
- Test the resistance of the primary and secondary circuits using a multimeter.
- Check if the coil is receiving power by testing voltage at the B+ terminal.
- Verify continuity between the PCM and the coil connector.
Fixes
- Replace the faulty ignition coil or repair wiring issues.
FAQ
What does P0354 mean?
P0354 indicates a malfunction in the primary/secondary circuit of ignition coil 'D' on cylinder 4.
How do I diagnose P0354?
Diagnose by visually inspecting, swapping coils, testing resistance and voltage, and checking continuity between PCM and coil connector.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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- P0305Cylinder 5 Misfire Detected
- P0306Cylinder 6 Misfire Detected
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