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TuningBot DTC Database · v4.37.15

P1086 Diagnostic Trouble Code (3 interpretations)

3 manufacturer-specific interpretations across 2 manufacturers in the TuningBot DTC database.

P · PowertrainFuelOBD2
Brand pages:MINIVAG

MINI

1 interpretation
P1086
Fuel Control Mixture Rich Bank 2 Sensor 1 MINI · fuel Data confidence 62%

The control module detected a fault associated with the Fuel Control Mixture Rich Bank 2 Sensor 1 circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by MINI.

VAG

2 interpretations
P1086
Exhaust Bank 4 - Mixture Adaption Range 2 Lower Lean Limit Not Reached VAG · fuel Data confidence 62%

The control module determined that the Exhaust Bank 4 - Mixture Adaption Range 2 Lower Lean adaptation reached its permissible limit. This is the manufacturer-specific definition used by Audi.

Possible causes

  • Wiring
  • HO2S
Applies to Audi
P1086
Exhaust Bank 4 - Mixture Adaption Range 2 Lower Lean Limit Not Reached VAG · fuel Data confidence 62%

The control module determined that the Exhaust Bank 4 - Mixture Adaption Range 2 Lower Lean adaptation reached its permissible limit. This is the manufacturer-specific definition used by Volkswagen.

Applies to Volkswagen

Related and nearby codes

How to read P1086

P

Powertrain: engine, transmission and driveline systems.

1

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

086

Specific fault index within the subsystem.

Frequently asked questions about P1086

What does P1086 mean?

Diagnostic Trouble Code (3 interpretations). The control module detected a fault associated with the Fuel Control Mixture Rich Bank 2 Sensor 1 circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by MINI.

Is P1086 generic or manufacturer-specific?

P1086 is a manufacturer-specific code. In this database it is documented for: MINI, VAG. The same number can mean something different on other brands.

Can TuningBot remove P1086 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

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