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Powertrain code references — Page 25.

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

9,891 code references in powertrain

Generic OBD-II
P0991

Transmission Fluid Pressure Sensor/Switch E Circuit Intermittent

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Generic OBD-II
P0992

Transmission Fluid Pressure Sensor/Switch F Circuit

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Generic OBD-II
P0993

Transmission Fluid Pressure Sensor/Switch F Circuit Range/Performance

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Generic OBD-II
P0994

Transmission Fluid Pressure Sensor/Switch F Circuit Low

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Generic OBD-II
P0995

Transmission Fluid Pressure Sensor/Switch F Circuit High

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Generic OBD-II
P0996

Transmission Fluid Pressure Sensor/Switch F Circuit Intermittent

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Generic OBD-II
P0997

Shift Solenoid F Control Circuit Range/Performance

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Generic OBD-II
P0998

Shift Solenoid F Control Circuit Low

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Generic OBD-II
P0999

Shift Solenoid F Control Circuit High

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Generic OBD-II
P099A

Shift Solenoid G Control Circuit Range/Performance

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Generic OBD-II
P099B

Shift Solenoid G Control Circuit Low

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Generic OBD-II
P099C

Shift Solenoid G Control Circuit High

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Generic OBD-II
P099D

Shift Solenoid H Control Circuit Range/Performance

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Generic OBD-II
P099E

Shift Solenoid H Control Circuit Low

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Generic OBD-II
P099F

Shift Solenoid H Control Circuit High

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Generic OBD-II
P09A0

Shift Solenoid G Control Circuit/Open

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Generic OBD-II
P09A1

Shift Solenoid H Control Circuit/Open

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Generic OBD-II
P09A2

Gate Select Position Circuit B

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Generic OBD-II
P09A3

Gate Select Position Circuit B Range/Performance

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Generic OBD-II
P09A4

Gate Select Position Circuit B Low

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Generic OBD-II
P09A5

Gate Select Position Circuit B High

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Generic OBD-II
P09A6

Gate Select Position Circuit C

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Generic OBD-II
P09A7

Gate Select Position Circuit C Range/Performance

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Generic OBD-II
P09A8

Gate Select Position Circuit C Low

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Generic OBD-II
P09A9

Gate Select Position Circuit C High

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Generic OBD-II
P0A00

Motor Electronics Coolant Temperature Sensor A Circuit

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Generic OBD-II
P0A01

Motor Electronics Coolant Temperature Sensor A Circuit Range/Performance

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Generic OBD-II
P0A02

Motor Electronics Coolant Temperature Sensor A Circuit Low

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Generic OBD-II
P0A03

Motor Electronics Coolant Temperature Sensor A Circuit High

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Generic OBD-II
P0A04

Motor Electronics Coolant Temperature Sensor A Circuit Intermittent

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Generic OBD-II
P0A05

Motor Electronics Coolant Pump A Control Circuit/Open

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Generic OBD-II
P0A06

Motor Electronics Coolant Pump A Control Circuit Low

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Generic OBD-II
P0A07

Motor Electronics Coolant Pump A Control Circuit High

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Generic OBD-II
P0A08

DC/DC Converter Status Circuit

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Generic OBD-II
P0A09

DC/DC Converter Status Circuit Low

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Generic OBD-II
P0A0A

High Voltage System Interlock Circuit A

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Generic OBD-II
P0A0B

High Voltage System Interlock Circuit A Performance

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Generic OBD-II
P0A0C

High Voltage System Interlock Circuit A Low

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Generic OBD-II
P0A0D

High Voltage System Interlock Circuit A High

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Generic OBD-II
P0A0E

High Voltage System Interlock Circuit A Intermittent

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Generic OBD-II
P0A0F

Engine Failed to Start

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Generic OBD-II
P0A10

DC/DC Converter Status Circuit High

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Generic OBD-II
P0A11

DC/DC Converter Enable Circuit/Open

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Generic OBD-II
P0A12

DC/DC Converter Enable Circuit Low

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Generic OBD-II
P0A13

DC/DC Converter Enable Circuit High

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Generic OBD-II
P0A14

Engine Mount A Control Circuit/Open

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Generic OBD-II
P0A15

Engine Mount A Control Circuit Low

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Generic OBD-II
P0A16

Engine Mount A Control Circuit High

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Generic OBD-II
P0A17

Motor Torque Sensor Circuit

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Generic OBD-II
P0A18

Motor Torque Sensor Circuit Range/Performance

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Generic OBD-II
P0A19

Motor Torque Sensor Circuit Low

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Generic OBD-II
P0A1A

Generator Control Module

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Generic OBD-II
P0A1B

Drive Motor A Control Module Performance

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Generic OBD-II
P0A1C

Drive Motor B Control Module Performance

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Generic OBD-II
P0A1D

Hybrid/EV Powertrain Control Module A

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Generic OBD-II
P0A1E

Starter/Generator Control Module

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Generic OBD-II
P0A1F

Battery Energy Control Module A Performance

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Generic OBD-II
P0A20

Motor Torque Sensor Circuit High

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Generic OBD-II
P0A21

Motor Torque Sensor Circuit Intermittent

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Generic OBD-II
P0A22

Generator Torque Sensor Circuit

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Generic OBD-II
P0A23

Generator Torque Sensor Circuit Range/Performance

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Generic OBD-II
P0A24

Generator Torque Sensor Circuit Low

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Generic OBD-II
P0A25

Generator Torque Sensor Circuit High

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Generic OBD-II
P0A26

Generator Torque Sensor Circuit Intermittent

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Generic OBD-II
P0A27

Hybrid/EV Battery Power Off Circuit

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Generic OBD-II
P0A28

Hybrid/EV Battery Power Off Circuit Low

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Generic OBD-II
P0A29

Hybrid/EV Battery Power Off Circuit High

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Generic OBD-II
P0A2A

Drive Motor A Temperature Sensor A Circuit

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Generic OBD-II
P0A2B

Drive Motor A Temperature Sensor A Circuit Range/Performance

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Generic OBD-II
P0A2C

Drive Motor A Temperature Sensor A Circuit Low

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Generic OBD-II
P0A2D

Drive Motor A Temperature Sensor A Circuit High

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Generic OBD-II
P0A2E

Drive Motor A Temperature Sensor A Circuit Intermittent

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Generic OBD-II
P0A2F

Drive Motor A Over Temperature

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Generic OBD-II
P0A30

Drive Motor B Temperature Sensor Circuit

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Generic OBD-II
P0A31

Drive Motor B Temperature Sensor Circuit Range/Performance

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Generic OBD-II
P0A32

Drive Motor B Temperature Sensor Circuit Low

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Generic OBD-II
P0A33

Drive Motor B Temperature Sensor Circuit High

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Generic OBD-II
P0A34

Drive Motor B Temperature Sensor Circuit Intermittent

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Generic OBD-II
P0A35

Drive Motor B Over Temperature

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Generic OBD-II
P0A36

Generator Temperature Sensor Circuit

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Generic OBD-II
P0A37

Generator Temperature Sensor Circuit Range/Performance

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Generic OBD-II
P0A38

Generator Temperature Sensor Circuit Low

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Generic OBD-II
P0A39

Generator Temperature Sensor Circuit High

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Generic OBD-II
P0A3A

Generator Temperature Sensor Circuit Intermittent

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Generic OBD-II
P0A3B

Generator A Over Temperature

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Generic OBD-II
P0A3C

Drive Motor A Inverter Over Temperature

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Generic OBD-II
P0A3D

Drive Motor B Inverter Over Temperature

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Generic OBD-II
P0A3E

Generator Inverter Over Temperature

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Generic OBD-II
P0A3F

Drive Motor A Position Sensor Circuit

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Generic OBD-II
P0A40

Drive Motor A Position Sensor Circuit Range/Performance

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Generic OBD-II
P0A41

Drive Motor A Position Sensor Circuit Low

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Generic OBD-II
P0A42

Drive Motor A Position Sensor Circuit High

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Generic OBD-II
P0A43

Drive Motor A Position Sensor Circuit Intermittent

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Generic OBD-II
P0A44

Drive Motor A Position Sensor Circuit Overspeed

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Generic OBD-II
P0A45

Drive Motor B Position Sensor Circuit

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Generic OBD-II
P0A46

Drive Motor B Position Sensor Circuit Range/Performance

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Generic OBD-II
P0A47

Drive Motor B Position Sensor Circuit Low

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Generic OBD-II
P0A48

Drive Motor B Position Sensor Circuit High

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Generic OBD-II
P0A49

Drive Motor B Position Sensor Circuit Intermittent

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Generic OBD-II
P0A4A

Drive Motor B Position Sensor Circuit Overspeed

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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.