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TuningBot DTC Database · v4.37.15

P1157 Volvo - Heated oxygen sensor (HO2S) 2, bank 2 - lean

Manufacturer-specific interpretation for Volvo. All interpretations of P1157

P · PowertrainEmissionsOBD2

What P1157 means

P1157
Heated oxygen sensor (HO2S) 2, bank 2 - lean Volvo · emissions Data confidence 62%

The control module detected a fault associated with the Heated oxygen sensor (HO2S) 2, bank 2 - lean circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Volvo.

Possible causes

  • Intake/exhaust leak
  • MAF sensor
  • MAP sensor
  • fuel pressure low
  • fuel pump (FP)
  • injector(s)

Related and nearby codes

How to read P1157

P

Powertrain: engine, transmission and driveline systems.

1

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

157

Specific fault index within the subsystem.

Frequently asked questions about P1157

What does P1157 mean?

Heated oxygen sensor (HO2S) 2, bank 2 - lean. The control module detected a fault associated with the Heated oxygen sensor (HO2S) 2, bank 2 - lean circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Volvo.

Is P1157 generic or manufacturer-specific?

P1157 is a manufacturer-specific code. In this database it is documented for: Volvo. The same number can mean something different on other brands.

Can TuningBot remove P1157 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 Volvo engines See the results →

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