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TuningBot DTC Database · v4.37.14

P02A8 Cylinder 4 - Injector Restricted

Generic (OBD-II) interpretation in the TuningBot DTC database.

P · PowertrainFuelOBD2

What P02A8 means

P02A8
Cylinder 4 - Injector Restricted Generic · fuel Data confidence 85%

The control module detected a response consistent with a blocked or restricted Cylinder 4 - Injector.

Symptoms

  • MIL illuminated
  • Possible rough running or misfire
  • Possible increased fuel consumption

Possible causes

  • Injector electrical or mechanical fault
  • Wiring or connector fault
  • Fuel supply fault
  • Air leak causing mixture deviation

Recommended checks

  • Read fuel trim / mixture adaptation values
  • Check injector circuits and compare cylinder balance
  • Check fuel pressure
  • Inspect for intake or exhaust leaks

Related and nearby codes

How to read P02A8

P

Powertrain: engine, transmission and driveline systems.

0

Generic SAE-standard code: same meaning on every make.

2A8

Specific fault index within the subsystem.

Frequently asked questions about P02A8

What does P02A8 mean?

Cylinder 4 - Injector Restricted. The control module detected a response consistent with a blocked or restricted Cylinder 4 - Injector.

Is P02A8 generic or manufacturer-specific?

P02A8 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P02A8 at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry and, where the ECU needs it, corrects the checksum too. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.

Other file services

ECU tuningDyno-tested results by model and engine See the results →

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