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TuningBot DTC Database · v4.37.15

P1181 Diagnostic Trouble Code (7 interpretations)

7 manufacturer-specific interpretations across 6 manufacturers in the TuningBot DTC database.

P · PowertrainEngineOBD2

Ford

1 interpretation
P1181
Fuel Delivery System Malfunction High Ford · engine Data confidence 80%

The control module detected a fault associated with the Fuel Delivery System Malfunction High circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Ford.

Hyundai

1 interpretation
P1181
Fuel Pressure Monitoring - Malfunction Hyundai · fuel Data confidence 62%

The control module detected improper operation of the Fuel Pressure Monitoring. This is the manufacturer-specific definition used by Hyundai.

Mercedes-Benz

1 interpretation
P1181
Engine coolant blower motor!NC condenser blower motor - malfunction Mercedes-Benz · climate_control Data confidence 62%

The control module detected improper operation of the Engine coolant blower motor!NC condenser blower motor. This is the manufacturer-specific definition used by Mercedes-Benz.

Possible causes

  • Wiring
  • engine coolant blower motor/AIC condenser blower motor
  • ECM

MINI

1 interpretation
P1181
O2 Sensor Signal Circuit Slow Switching From Rich to Lean Bank 2 Sensor 2 MINI · emissions Data confidence 62%

The control module detected a fault associated with the O2 Sensor Signal Circuit Slow Switching From Rich to Lean Bank 2 Sensor 2 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
P1181
Heated oxygen sensor (HO2S) 1, Bank 1, reference voltage - open circuit VAG · emissions Data confidence 62%

The control module detected an interruption (open circuit) in the Heated oxygen sensor (HO2S) 1, Bank 1, reference voltage circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by Audi.

Possible causes

  • Wiring open circuit
  • HO2S
  • HT leads
  • spark plugs
  • misfire detection
Applies to Audi
P1181
Heated oxygen sensor (HO2S) reference voltage - open circuit VAG · emissions Data confidence 80%

The control module detected an interruption (open circuit) in the Heated oxygen sensor (HO2S) reference voltage circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by Volkswagen.

Possible causes

  • Wiring open circuit
  • HO2S
  • HT leads
  • spark plugs
  • misfire detection
Applies to Volkswagen

Volvo

1 interpretation
P1181
System too lean, bank 2 - part load Volvo · fuel Data confidence 62%

The control module detected that the air-fuel mixture stayed leaner than the target despite full corrective control (System). 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 P1181

P

Powertrain: engine, transmission and driveline systems.

1

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

181

Specific fault index within the subsystem.

Frequently asked questions about P1181

What does P1181 mean?

Diagnostic Trouble Code (7 interpretations). The control module detected a fault associated with the Fuel Delivery System Malfunction High circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Ford.

Is P1181 generic or manufacturer-specific?

P1181 is a manufacturer-specific code. In this database it is documented for: Ford, Hyundai, Mercedes-Benz, MINI, VAG, Volvo. The same number can mean something different on other brands.

Can TuningBot remove P1181 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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