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TuningBot DTC Database · v4.37.15

P1309 Mazda - Misfire detection monitor - not enabled

Manufacturer-specific interpretation for Mazda. All interpretations of P1309

P · PowertrainIgnitionDriveability: LimitedOBD2

What P1309 means

P1309
Misfire detection monitor - not enabled Mazda · ignition Data confidence 80%

The control module detected a fault associated with the Misfire detection monitor - not enabled circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Mazda.

Possible causes

  • CMP not synchronized
  • CMP
  • ECM

Related and nearby codes

How to read P1309

P

Powertrain: engine, transmission and driveline systems.

1

Manufacturer-defined range: the meaning can differ between brands.

309

Specific fault index within the subsystem.

Frequently asked questions about P1309

What does P1309 mean?

Misfire detection monitor - not enabled. The control module detected a fault associated with the Misfire detection monitor - not enabled circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Mazda.

Is P1309 generic or manufacturer-specific?

P1309 is a manufacturer-specific code. In this database it is documented for: Mazda. The same number can mean something different on other brands.

Can TuningBot remove P1309 at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.

Other file services

ECU tuningStage 1 dyno results for Mazda engines See the results →

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