Ignition and knock sensing
Ignition coils, engine speed input and knock sensors — the spark side, as opposed to the misfire codes that report the result.
5 documented codes across 14 real diagnostics.
Ranked by how often we actually see them
| Code | What it is | Diagnostics |
|---|---|---|
| P0322 | Ignition or distributor engine speed input circuit, no signal | 5 |
| P0325 | Knock sensor 1 circuit, bank 1 | 4 |
| P0350 | Ignition coil primary/secondary circuit | 2 |
| P0321 | Ignition or distributor engine speed input circuit range/performance | 2 |
| P0320 | Ignition or distributor engine speed input circuit | 1 |
FAQ
Frequently asked questions
How do I run a diagnosis?
Select the vehicle on Start, click the Diagnostic card and choose New diagnostic. Fill in the description, the error codes and the mileage, then click Analyze.
Learn more: Diagnostic (vehicle-first start), Diagnostic form: description, error codes and mileage
Do I have to type the codes from my scan tool?
No. Click the camera button next to Error codes and take or choose a photo (JPEG or PNG) of the scan tool's screen; WrenchLane reads the codes and their descriptions into the form. You can also speak them with the microphone.
Learn more: OBD reader photo scan (fault codes from a photo), Voice input for the problem description
Are the public fault code pages built from my diagnostics?
They are built from anonymised, aggregated diagnostics run in WrenchLane; no workshop, customer or vehicle can be identified. Each fault code page shows how often the code was seen across those diagnostics and in how many separate workshops.
Learn more: Fault code pages on wrenchlane.com (fault-code cluster)
Work a ignition and knock sensing fault on a real car
Enter the codes and the symptoms and get ranked probable causes for that specific vehicle, with the checks in the order worth doing them. Free account, no card.
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