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

Ford bank-two upstream oxygen output indicates lean without switching

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

Ford bank-two upstream oxygen output stays rich during the switching test

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

Bank 2 front oxygen-sensor switching must meet the monitor criteria

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

Unequal bank-2 oxygen-sensor transition times

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

Volkswagen G71 manifold-pressure circuit fault: wiring and hose routing matter

O2 Sensor Heater Circuit Low Voltage Bank 2 Sensor 2

HO2S Rich Average Bank 2 Sensor 1

Volkswagen G71 pressure signal: separating sensor and reference faults

O2 Sensor Heater Circuit High Voltage Bank 2 Sensor 2

HO2S Bank 2 Sensor 2 Lean System Or Low Voltage

Ford bank-two downstream oxygen signal remains lean in its response test

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

Ford bank-two rear oxygen channel stays rich during the response evaluation

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

Volkswagen intake temperature fault and the 136.8°C substitute value

Fuel Trim Adaptation Additive Bank 2 High

HO2S Heater Power Stage Circuit Bank 2 Sensor 2

G72 intake-temperature circuit faults may have few symptoms

Fuel Trim Adaptation Additive Per Ignition Bank 1 Low

Honda A/F sensor circuit fault: separate signal wiring from the sensor

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

Volkswagen fuel-temperature sensor G81 open or short to supply

Fuel Trim Adaptation Additive Per Ignition Bank 2 Low

HO2S Bank 2 Sensor 3 Rich Or High Voltage

Honda A/F sensor performance during deceleration

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

Maxima swirl-vacuum switch stays in the wrong state

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

Honda A/F heater command and feedback disagree

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

Honda A/F heater fault and the P1162 diagnostic priority

Ford fuel-rail pressure remains in range but is too low

HO2S11 Label Circuit Low Voltage Fault Bank 1 Sensor 1

Closed Loop Control Bank 2

Ford fuel-rail pressure is in range but reported too high

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