OBD-II code · Powertrain (generic, extended)
P2302 Ignition Coil A Secondary Circuit
A fault is detected on the secondary (high-voltage) side of ignition coil A. The spark delivered to the plug is missing or too weak, causing a misfire on the cylinder served by coil A. Causes: a worn spark plug or wide gap, a cracked coil or boot, carbon tracking, or an open or leaking secondary winding.
Is it safe to drive with P2302?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyWorn or fouled spark plug
- PossibleCoil secondary winding failure
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.2–1 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Ignition Coil, Spark Plug, Spark Plug Wire
Related codes
- P2305Ignition Coil B Secondary Circuit
- P2308Ignition Coil C Secondary Circuit
- P2311Ignition Coil D Secondary Circuit
- P2314Ignition Coil E Secondary Circuit
- P2317Ignition Coil F Secondary Circuit
- P2320Ignition Coil G Secondary Circuit
- P2323Ignition Coil H Secondary Circuit
- P2326Ignition Coil I Secondary Circuit
- P2329Ignition Coil J Secondary Circuit
- P2332Ignition Coil K Secondary Circuit
- P2335Ignition Coil L Secondary Circuit
- P2359Ignition Coil L Secondary Circuit
- P22FFSCR NOx Catalyst Inlet Temperature Too Low
- P2300Ignition Coil A Primary Control Circuit Low
- P2301Ignition Coil A Primary Control Circuit High
- P2303Ignition Coil B Primary Control Circuit Low
- P2304Ignition Coil B Primary Control Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.