5 documented codes across 14 real diagnostics.
Ignition coils, engine speed input and knock sensors, the spark side, as opposed to the misfire codes that report the result.
Ranked by how often we actually see them
- P0322, Ignition or distributor engine speed input circuit, no signal
- P0325, Knock sensor 1 circuit, bank 1
- P0350, Ignition coil primary/secondary circuit
- P0321, Ignition or distributor engine speed input circuit range/performance
- P0320, Ignition or distributor engine speed input circuit