Hours: 07–23 daily

TuningBot DTC Database · v4.37.15

P02B2 Cylinder 7 - Fuel Trim at Max Limit

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

P · PowertrainFuelOBD2

What P02B2 means

P02B2
Cylinder 7 - Fuel Trim at Max Limit Generic · fuel Data confidence 85%

The control module detected that the monitored Cylinder 7 - Fuel Trim at value reached its permissible limit.

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 P02B2

P

Powertrain: engine, transmission and driveline systems.

0

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

2B2

Specific fault index within the subsystem.

Frequently asked questions about P02B2

What does P02B2 mean?

Cylinder 7 - Fuel Trim at Max Limit. The control module detected that the monitored Cylinder 7 - Fuel Trim at value reached its permissible limit.

Is P02B2 generic or manufacturer-specific?

P02B2 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P02B2 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 tuningDyno-tested results by model and engine See the results →

← Search the full DTC database