What does code P0354 mean on a Honda and is it safe to drive?
P0354: Ignition Coil D Primary/Secondary Circuit Malfunction. Here's what it means on your Honda, what usually causes it, what repairs typically cost, and how safe it is to keep driving.
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What this code means
Fault in ignition coil D circuit (cylinder 4). This is the fourth coil in a coil-on-plug system. Diagnosis mirrors P0351–P0353 but targets cylinder 4.
Common causes for your Honda
- Failed ignition coil on cylinder 4
- Worn or fouled spark plug on cylinder 4
- Damaged coil wiring or connector
Symptoms
- Check Engine Light on or flashing
- Rough idle or misfire on cylinder 4
- Reduced performance
Typical fixes
- Replace ignition coil for cylinder 4
- Replace spark plug on cylinder 4
- Inspect coil connector and wiring
Repair cost range
For a Honda, repairs for P0354 often fall between $80 and $300, depending on the cause and whether you use OEM or aftermarket parts. Labor rates vary by location.
Known issues on Honda
Honda P0354 on 4-cylinder K-series engines means a failed cylinder 4 coil (firewall-side on most transverse layouts). Swap to confirm the fault follows the coil; replace coil and plug as a set.
Most commonly affected models
Accord 2003–2012Civic 2006–2011CR-V 2005–2011