P2300 to P2335: ignition coil primary and secondary circuits A to L
The primary circuit of an ignition coil (A to L) reads low or high, or its secondary circuit, the high voltage side, has a fault.
SeverityHighCarrying on can cause expensive damage, so deal with it now.
Can you keep driving?Only as far as the workshopWhat does P2300 mean?
Where P0350 to P0362 report a coil fault in general, these codes say which side failed. The primary circuit is the low voltage wire the engine computer switches; low usually means a short to ground, high a short to the supply or an open wire. The secondary circuit is the high voltage that jumps the spark plug gap, and a fault there often comes from a worn plug, a cracked coil or a damaged boot. Either way, that cylinder misfires.
What causes P2300?
- A cracked ignition coil or a failed coil driver
- A worn spark plug with too wide a gap, for the secondary codes
- A torn coil boot or carbon tracking letting the spark leak to ground
- A damaged primary wire or connector at the coil
- Moisture or oil getting past a coil seal into the plug well
What to check first for P2300
- Match the coil letter to its cylinder using the service information
- Inspect the coil boot and the spark plug well for oil, water and burn marks
- Check the spark plug's gap and condition
- Swap the coil with a neighbor to see whether the fault follows it
Can you drive with P2300?
Drive only to a workshop and gently. A dead coil means a misfiring cylinder, and unburnt fuel can overheat the catalytic converter; if the check engine light flashes or the engine shakes badly, stop and have the car towed.
In states with an OBD-II emissions inspection, a car with the check engine light on fails the test until the fault is fixed.
Codes on this page
36
- P2300Ignition Coil "A" Primary Control Circuit Low
- P2301Ignition Coil "A" Primary Control Circuit High
- P2302Ignition Coil "A" Secondary Circuit
- P2303Ignition Coil "B" Primary Control Circuit Low
- P2304Ignition Coil "B" Primary Control Circuit High
- P2305Ignition Coil "B" Secondary Circuit
- P2306Ignition Coil "C" Primary Control Circuit Low
- P2307Ignition Coil "C" Primary Control Circuit High
- P2308Ignition Coil "C" Secondary Circuit
- P2309Ignition Coil "D" Primary Control Circuit Low
- P2310Ignition Coil "D" Primary Control Circuit High
- P2311Ignition Coil "D" Secondary Circuit
- P2312Ignition Coil "E" Primary Control Circuit Low
- P2313Ignition Coil "E" Primary Control Circuit High
- P2314Ignition Coil "E" Secondary Circuit
- P2315Ignition Coil "F" Primary Control Circuit Low
- P2316Ignition Coil "F" Primary Control Circuit High
- P2317Ignition Coil "F" Secondary Circuit
- P2318Ignition Coil "G" Primary Control Circuit Low
- P2319Ignition Coil "G" Primary Control Circuit High
- P2320Ignition Coil "G" Secondary Circuit
- P2321Ignition Coil "H" Primary Control Circuit Low
- P2322Ignition Coil "H" Primary Control Circuit High
- P2323Ignition Coil "H" Secondary Circuit
- P2324Ignition Coil "I" Primary Control Circuit Low
- P2325Ignition Coil "I" Primary Control Circuit High
- P2326Ignition Coil "I" Secondary Circuit
- P2327Ignition Coil "J" Primary Control Circuit Low
- P2328Ignition Coil "J" Primary Control Circuit High
- P2329Ignition Coil "J" Secondary Circuit
- P2330Ignition Coil "K" Primary Control Circuit Low
- P2331Ignition Coil "K" Primary Control Circuit High
- P2332Ignition Coil "K" Secondary Circuit
- P2333Ignition Coil "L" Primary Control Circuit Low
- P2334Ignition Coil "L" Primary Control Circuit High
- P2335Ignition Coil "L" Secondary Circuit
Related codes
Checked on · Rafael Soares
These are the generic meanings every manufacturer shares. Each brand adds its own detail, so your car's handbook, its service information and a qualified mechanic have the last word. OdoKeep has no connection with any manufacturer, and the app does not read codes from the car.
