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THE CODE DIRECTORY

Diagnostic code references — Page 93.

Browse canonical reference entries. Each definition keeps its own source and vehicle-applicability limits.

11,786 code references

Generic OBD-II
P2A0B

Manifold Absolute Pressure Sensor B Circuit Range/Performance

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Generic OBD-II
P2A0C

Manifold Absolute Pressure Sensor B Circuit Low

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Generic OBD-II
P2A0D

Manifold Absolute Pressure Sensor B Circuit High

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Generic OBD-II
P2A0E

Manifold Absolute Pressure Sensor B Circuit Intermittent/Erratic

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Generic OBD-II
P2A0F

Fuel Supply Heater Performance

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Generic OBD-II
P2A10

O2 Sensor Negative Voltage Bank 2 Sensor 2

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Generic OBD-II
P2A11

O2 Sensor Negative Voltage Bank 2 Sensor 3

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Generic OBD-II
P2A12

Injection Pump Fuel Metering Control C (Cam/Rotor/Injector)

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Generic OBD-II
P2A13

Injection Pump Fuel Metering Control C Range/Performance (Cam/Rotor/Injector)

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Generic OBD-II
P2A14

Injection Pump Fuel Metering Control C Low (Cam/Rotor/Injector)

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Generic OBD-II
P2A15

Injection Pump Fuel Metering Control C High (Cam/Rotor/Injector)

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Generic OBD-II
P2A16

Injection Pump Fuel Metering Control D (Cam/Rotor/Injector)

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Generic OBD-II
P2A17

Injection Pump Fuel Metering Control D Range/Performance (Cam/Rotor/Injector)

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Generic OBD-II
P2A18

Injection Pump Fuel Metering Control D Low (Cam/Rotor/Injector)

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Generic OBD-II
P2A19

Injection Pump Fuel Metering Control D High (Cam/Rotor/Injector)

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Generic OBD-II
P2A1A

Injection Pump Fuel Metering Control E (Cam/Rotor/Injector)

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Generic OBD-II
P2A1B

Injection Pump Fuel Metering Control E Range/Performance (Cam/Rotor/Injector)

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Generic OBD-II
P2A1C

Injection Pump Fuel Metering Control E Low (Cam/Rotor/Injector)

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Generic OBD-II
P2A1D

Injection Pump Fuel Metering Control E High (Cam/Rotor/Injector)

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Generic OBD-II
P2A1E

Injection Pump Fuel Metering Control F (Cam/Rotor/Injector)

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Generic OBD-II
P2A1F

Injection Pump Fuel Metering Control F Range/Performance (Cam/Rotor/Injector)

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Generic OBD-II
P2A20

Injection Pump Fuel Metering Control F Low (Cam/Rotor/Injector)

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Generic OBD-II
P2A21

Injection Pump Fuel Metering Control F High (Cam/Rotor/Injector)

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Generic OBD-II
P2A22

Alternative Fuel Tank Shutoff Valve B Control Circuit/Open

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Generic OBD-II
P2A23

Alternative Fuel Tank Shutoff Valve B Control Circuit Performance/Stuck Off

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Generic OBD-II
P2A24

Alternative Fuel Tank Shutoff Valve B Control Circuit Low

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Generic OBD-II
P2A25

Alternative Fuel Tank Shutoff Valve B Control Circuit High

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Generic OBD-II
P2A26

Alternative Fuel Tank Shutoff Valve C Control Circuit/Open

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Generic OBD-II
P2A27

Alternative Fuel Tank Shutoff Valve C Control Circuit Performance/Stuck Off

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Generic OBD-II
P2A28

Alternative Fuel Tank Shutoff Valve C Control Circuit Low

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Generic OBD-II
P2A29

Alternative Fuel Tank Shutoff Valve C Control Circuit High

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Generic OBD-II
P2A2A

Alternative Fuel Tank Shutoff Valve D Control Circuit/Open

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Generic OBD-II
P2A2B

Alternative Fuel Tank Shutoff Valve D Control Circuit Performance/Stuck Off

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Generic OBD-II
P2A2C

Alternative Fuel Tank Shutoff Valve D Control Circuit Low

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Generic OBD-II
P2A2D

Alternative Fuel Tank Shutoff Valve D Control Circuit High

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Generic OBD-II
P2A2E

Alternative Fuel Tank Shutoff Valve E Control Circuit/Open

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Generic OBD-II
P2A2F

Alternative Fuel Tank Shutoff Valve E Control Circuit Performance/Stuck Off

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Generic OBD-II
P2A30

Alternative Fuel Tank Shutoff Valve E Control Circuit Low

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Generic OBD-II
P2A31

Alternative Fuel Tank Shutoff Valve E Control Circuit High

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Generic OBD-II
P2A32

AFCM Power Relay Control Circuit/Open

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Generic OBD-II
P2A33

AFCM Power Relay Control Circuit Low

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Generic OBD-II
P2A34

AFCM Power Relay Control Circuit High

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Generic OBD-II
P2A35

AFCM Power Relay Sense Circuit

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Generic OBD-II
P2A36

AFCM Power Relay Sense Circuit Low

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Generic OBD-II
P2A37

AFCM Power Relay Sense Circuit High

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Generic OBD-II
P2A38

O2 Sensor Positive Current Control Circuit/Open Bank 1 Sensor 3

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Generic OBD-II
P2A39

O2 Sensor Positive Current Control Circuit Low Bank 1 Sensor 3

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Generic OBD-II
P2A3A

O2 Sensor Positive Current Control Circuit High Bank 1 Sensor 3

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Generic OBD-II
P2A3B

O2 Sensor Negative Current Control Circuit/Open Bank 1 Sensor 3

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Generic OBD-II
P2A3C

O2 Sensor Negative Current Control Circuit Low Bank 1 Sensor 3

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Generic OBD-II
P2A3D

O2 Sensor Negative Current Control Circuit High Bank 1 Sensor 3

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Generic OBD-II
P2A3E

Alternative Fuel Delivery Error

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Generic OBD-II
P2A3F

Excessive Time to Enter Alternative Fuel Control

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Generic OBD-II
P2A40

Alternative Fuel System - Injector Leakage to Rail Detected

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Generic OBD-II
P2A41

Alternative Fuel Tank B Pressure Sensor Circuit

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Generic OBD-II
P2A42

Alternative Fuel Tank B Pressure Sensor Range/Performance

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Generic OBD-II
P2A43

Alternative Fuel Tank B Pressure Sensor Circuit Low

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Generic OBD-II
P2A44

Alternative Fuel Tank B Pressure Sensor Circuit High

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Generic OBD-II
P2A45

Alternative Fuel Tank B Pressure Sensor Circuit Intermittent/Erratic

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Generic OBD-II
P2A46

Alternative Fuel Tank C Pressure Sensor Circuit

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Generic OBD-II
P2A47

Alternative Fuel Tank C Pressure Sensor Range/Performance

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Generic OBD-II
P2A48

Alternative Fuel Tank C Pressure Sensor Circuit Low

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Generic OBD-II
P2A49

Alternative Fuel Tank C Pressure Sensor Circuit High

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Generic OBD-II
P2A4A

Alternative Fuel Tank C Pressure Sensor Circuit Intermittent/Erratic

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Generic OBD-II
P2A4B

Alternative Fuel Temperature Sensor Circuit

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Generic OBD-II
P2A4C

Alternative Fuel Temperature Sensor Range/Performance

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Generic OBD-II
P2A4D

Alternative Fuel Temperature Sensor Circuit Low

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Generic OBD-II
P2A4E

Alternative Fuel Temperature Sensor Circuit High

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Generic OBD-II
P2A4F

Alternative Fuel Temperature Sensor Circuit Intermittent/Erratic

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Generic OBD-II
P2A50

Alternative Fuel Vaporizer A Outlet Temperature Sensor Circuit

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Generic OBD-II
P2A51

Alternative Fuel Vaporizer A Outlet Temperature Sensor Range/Performance

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Generic OBD-II
P2A52

Alternative Fuel Vaporizer A Outlet Temperature Sensor Circuit Low

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Generic OBD-II
P2A53

Alternative Fuel Vaporizer A Outlet Temperature Sensor Circuit High

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Generic OBD-II
P2A54

Alternative Fuel Vaporizer A Outlet Temperature Sensor Circuit Intermittent/Erratic

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Generic OBD-II
P2A55

Alternative Fuel Vaporizer B Outlet Temperature Sensor Circuit

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Generic OBD-II
P2A56

Alternative Fuel Vaporizer B Outlet Temperature Sensor Range/Performance

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Generic OBD-II
P2A57

Alternative Fuel Vaporizer B Outlet Temperature Sensor Circuit Low

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Generic OBD-II
P2A58

Alternative Fuel Vaporizer B Outlet Temperature Sensor Circuit High

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Generic OBD-II
P2A59

Alternative Fuel Vaporizer B Outlet Temperature Sensor Circuit Intermittent/Erratic

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Generic OBD-II
P2A5A

Alternative Fuel Vaporizer C Outlet Temperature Sensor Circuit

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Generic OBD-II
P2A5B

Alternative Fuel Vaporizer C Outlet Temperature Sensor Range/Performance

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Generic OBD-II
P2A5C

Alternative Fuel Vaporizer C Outlet Temperature Sensor Circuit Low

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Generic OBD-II
P2A5D

Alternative Fuel Vaporizer C Outlet Temperature Sensor Circuit High

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Generic OBD-II
P2A5E

Alternative Fuel Vaporizer C Outlet Temperature Sensor Circuit Intermittent/Erratic

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Generic OBD-II
P2A5F

Alternative Fuel Tank B Level Sensor Circuit

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Generic OBD-II
P2A60

Alternative Fuel Tank B Level Sensor Range/Performance

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Generic OBD-II
P2A61

Alternative Fuel Tank B Level Sensor Circuit Low

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Generic OBD-II
P2A62

Alternative Fuel Tank B Level Sensor Circuit High

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Generic OBD-II
P2A63

Alternative Fuel Tank B Level Sensor Circuit Intermittent/Erratic

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Generic OBD-II
P2A64

Alternative Fuel Tank C Level Sensor Circuit

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Generic OBD-II
P2A65

Alternative Fuel Tank C Level Sensor Range/Performance

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Generic OBD-II
P2A66

Alternative Fuel Tank C Level Sensor Circuit Low

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Generic OBD-II
P2A67

Alternative Fuel Tank C Level Sensor Circuit High

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Generic OBD-II
P2A68

Alternative Fuel Tank C Level Sensor Circuit Intermittent/Erratic

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Generic OBD-II
P2A69

Alternative Fuel Rail Pressure Regulator Inlet Pressure Sensor Circuit

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Generic OBD-II
P2A6A

Alternative Fuel Rail Pressure Regulator Inlet Pressure Sensor Range/Performance

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Generic OBD-II
P2A6B

Alternative Fuel Rail Pressure Regulator Inlet Pressure Sensor Circuit Low

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Generic OBD-II
P2A6C

Alternative Fuel Rail Pressure Regulator Inlet Pressure Sensor Circuit High

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Generic OBD-II
P2A6D

Alternative Fuel Rail Pressure Regulator Inlet Pressure Sensor Circuit Intermittent/Erratic

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Generic OBD-II
P2A6E

Alternative Fuel Rail Pressure Regulator Inlet Pressure Too Low

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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.