P CODE FAMILY

Powertrain code references — Page 41.

Engine, transmission and powertrain diagnostic references. Exact vehicle and module context still matters.

Mazda

P1150

These are code references, not a list of confirmed faults on every vehicle. Read the source and applicability notes, then match the exact vehicle, year, engine and scan report.

HO2S Bank 2 Sensor 1 Not Switching Fuel Control Limit Reached

Front Oxygen Sensor Heater Circuit High Input

Air/Fuel Sensor Circuit Range Performance Bank 1 Sensor 2

Oxygen Sensor Control Bank 2 Out Of Range

O2 Sensor Heater Circuit Signal Intermittent Bank 2 Sensor 1

Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Lean Bank 2

HO2S Bank 2 Sensor 1 Signal Below 0.45v AF Ratio Too Lean

Rear Oxygen Sensor Heater Circuit High Input

Bank 1 Long Term Fuel Trim Range 1 Lower Lean Limit Exceeded

O2 Sensor Heater Circuit Low Voltage Bank 2 Sensor 1

Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 2

HO2S Bank 2 Sensor 1 Signal Above 0.45v AF Ratio Too Rich

Bank 1 Long Term Fuel Trim Range 2 Lower Lean Limit Exceeded

O2 Sensor Heater Circuit High Voltage Bank 2 Sensor 1

HO2S Insufficient Switching

Bank 2 Fuel Control Shifted Lean

Air/Fuel Ratio Sensor Circuit Response Malfunction Bank 2 Sensor 1

Bank 2 Fuel Control Shifted Lean FAOSC

Air/Fuel Sensor Circuit Response Bank 1 Sensor 2

HO2S Transition Time Ratio

Bank 2 Fuel Control Shifted Rich

Bank 2 Fuel Control Shifted Rich FAOSC

Manifold Switch Over Malfunction

O2 Sensor Heater Circuit Intermittent Bank 2 Sensor 2

HO2S Lean Average Bank 2 Sensor 1

Alternative Fuel Controller

Air/Fuel Ratio Sensor Heater Circuit Malfunction Bank 1 Sensor 1

Air/Fuel Sensor Heater Circuit Bank 1 Sensor 2

Manifold Absolute Pressure Sensor Circuit Short To B+

O2 Sensor Heater Circuit Low Voltage Bank 2 Sensor 2

HO2S Rich Average Bank 2 Sensor 1

Manifold Absolute Pressure Sensor Circuit Open/Short To Ground

O2 Sensor Heater Circuit High Voltage Bank 2 Sensor 2

HO2S Bank 2 Sensor 2 Lean System Or Low Voltage

Lack of Downstream Heated Oxygen Sensor Switch Sensor Indicates Lean Bank 2

Lack Of HO2S22 Switches Sensor Indicates Lean

Manifold Absolute Pressure Sensor Circuit Power Supply Malfunction

Fuel Trim Adaptation Additive Bank 1 Low

HO2S Bank 2 Sensor 2 Rich Or High Voltage

Lack of Downstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 2

Lack Of HO2S22 Switches Sensor Indicates Rich

Manifold Absolute Pressure Sensor Circuit Range Performance

Fuel Trim Adaptation Additive Bank 1 High

HO2S Cross Counts Bank 2 Sensor 2

Fuel Trim Adaptation Additive Bank 2 Low

Manifold Temperature Sensor Circuit Short To Ground

Fuel Trim Adaptation Additive Bank 2 High

HO2S Heater Power Stage Circuit Bank 2 Sensor 2

Manifold Temperature Sensor Circuit Open/Short To B+

Fuel Trim Adaptation Additive Per Ignition Bank 1 Low

HO2S11 Circuit Fault Bank 1 Sensor 1

Fuel Temperature Sensor Circuit Short To Ground

Fuel Trim Adaptation Additive Per Ignition Bank 1 High

HO2S Bank 2 Sensor 3 Lean System Or Low Voltage

HO2S11 Slow Response Bank 1 Sensor 1

Fuel Temperature Sensor Circuit Open/Short To B+

Fuel Trim Adaptation Additive Per Ignition Bank 2 Low

HO2S Bank 2 Sensor 3 Rich Or High Voltage

HO2S11 Circuit Fault Bank 1 Sensor 1

Fuel Temperature Sensor Range Performance

Fuel Trim Adaptation Additive Per Ignition Bank 2 High

HO2S Cross Counts Bank 2 Sensor 2

HO2S11 Slow Response Bank 1 Sensor 1

Swirl Control Valve Control Vacuum Switch

Bank 1 Long Term Fuel Trim Range 1 Lower Lean Limit Exceeded

HO2S11 Heater Circuit Fault Bank 1 Sensor 1

Bank 1 Long Term Fuel Trim Range 2 Upper Rich Limit Exceeded

HO2S11 Heater Circuit VS+ Fault Bank 1 Sensor 1

Fuel Rail Sensor In-Range Low Failure

HO2S11 Label Circuit Low Voltage Fault Bank 1 Sensor 1

Closed Loop Control Bank 2

Fuel Rail Sensor In-Range High Failure

HO2S11 Label Circuit High Voltage Fault Bank 1 Sensor 1

HO2S Bank 1 Sensor 1 Circuit Fixed Bank 1 Sensor 1

Bank To Bank Fuel Trim Offset

ESO Engine Shut Off Solenoid Fault

HO2S11 Circuit Voltage Stuck At Mid-Range

HO2S Bank 1 Sensor 1 Circuit Fixed Bank 1 Sensor 1

Fuel System Lean During Acceleration

Rotor Sensor Fault