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THE CODE DIRECTORY

Diagnostic code references — Page 95.

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

11,786 code references

Generic OBD-II
P2AD3

Throttle/Pedal Position Sensor/Switch A/G Voltage Correlation

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Generic OBD-II
P2AD4

Intermediate System Voltage Low

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Generic OBD-II
P2AD5

Intermediate System Voltage High

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Generic OBD-II
P2AD6

Reductant Pump Motor Position Sensor Circuit

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Generic OBD-II
P2AD7

Reductant Pump Motor Position Sensor Circuit Range/Performance

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Generic OBD-II
P2AD8

Reductant Pump Motor Position Sensor Circuit Low

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Generic OBD-II
P2AD9

Reductant Pump Motor Position Sensor Circuit High

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Generic OBD-II
P2ADA

Reductant Tank Temperature Sensor B Circuit Range/Performance

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Generic OBD-II
P2ADB

Reductant Tank Temperature Sensor B Circuit Low

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Generic OBD-II
P2ADC

Reductant Tank Temperature Sensor B Circuit High

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Generic OBD-II
P2ADD

Reductant Tank Temperature Sensor B Circuit Intermittent/Erratic

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Generic OBD-II
P2ADE

Reductant Tank Temperature Sensor B Circuit

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Generic OBD-II
P2ADF

Intake Air System Leak Bank 2

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Generic OBD-II
P2AE0

Intake Air O2 Sensor Pumping Current Trim Circuit Open Bank 1

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Generic OBD-II
P2AE1

Intake Air O2 Sensor Pumping Current Trim Circuit Low Bank 1

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Generic OBD-II
P2AE2

Intake Air O2 Sensor Pumping Current Trim Circuit High Bank 1

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Generic OBD-II
P2AE3

Intake Air O2 Sensor Pumping Current Circuit Open Bank 1

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Generic OBD-II
P2AE4

Intake Air O2 Sensor Pumping Current Circuit Low Bank 1

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Generic OBD-II
P2AE5

Intake Air O2 Sensor Pumping Current Circuit High Bank 1

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Generic OBD-II
P2AE6

Intake Air O2 Sensor Negative Current Control Circuit Open Bank 1

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Generic OBD-II
P2AE7

Intake Air O2 Sensor Negative Current Control Circuit Low Bank 1

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Generic OBD-II
P2AE8

Intake Air O2 Sensor Negative Current Control Circuit High Bank 1

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Generic OBD-II
P2AE9

Intake Air O2 Sensor Pumping Current Trim Circuit Open Bank 2

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Generic OBD-II
P2AEA

Intake Air O2 Sensor Pumping Current Trim Circuit Low Bank 2

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Generic OBD-II
P2AEB

Intake Air O2 Sensor Pumping Current Trim Circuit High Bank 2

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Generic OBD-II
P2AEC

Intake Air O2 Sensor Pumping Current Circuit Open Bank 2

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Generic OBD-II
P2AED

Intake Air O2 Sensor Pumping Current Circuit Low Bank 2

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Generic OBD-II
P2AEE

Intake Air O2 Sensor Pumping Current Circuit High Bank 2

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Generic OBD-II
P2AEF

Intake Air O2 Sensor Negative Current Control Circuit Open Bank 2

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Generic OBD-II
P2AF0

Intake Air O2 Sensor Negative Current Control Circuit Low Bank 2

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Generic OBD-II
P2AF1

Intake Air O2 Sensor Negative Current Control Circuit High Bank 2

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Generic OBD-II
P2AF2

Starter Relay C Control Circuit/Open

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Generic OBD-II
P2AF3

Starter Relay C Control Circuit Low

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Generic OBD-II
P2AF4

Starter Relay C Control Circuit High

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Generic OBD-II
P2AF5

Starter Relay C Stuck On

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Generic OBD-II
P2AF6

Starter Relay C Stuck Off

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Generic OBD-II
P2AF7

Starter Relay D Control Circuit/Open

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Generic OBD-II
P2AF8

Starter Relay D Control Circuit Low

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Generic OBD-II
P2AF9

Starter Relay D Control Circuit High

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Generic OBD-II
P2AFA

Starter Relay D Stuck On

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Generic OBD-II
P2AFB

Starter Relay D Stuck Off

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Generic OBD-II
P2AFC

Engine Coolant Temperature Sensor 4 Circuit

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Generic OBD-II
P2AFD

Engine Coolant Temperature Sensor 4 Circuit Range/Performance

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Generic OBD-II
P2AFE

Engine Coolant Temperature Sensor 4 Circuit Low

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Generic OBD-II
P2AFF

Engine Coolant Temperature Sensor 4 Circuit High

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Generic OBD-II
P2B00

Cylinder 1 Injection Pulse Performance

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Generic OBD-II
P2B01

Cylinder 2 Injection Pulse Performance

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Generic OBD-II
P2B02

Cylinder 3 Injection Pulse Performance

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Generic OBD-II
P2B03

Cylinder 4 Injection Pulse Performance

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Generic OBD-II
P2B04

Cylinder 5 Injection Pulse Performance

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Generic OBD-II
P2B05

Cylinder 6 Injection Pulse Performance

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Generic OBD-II
P2B06

Cylinder 7 Injection Pulse Performance

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Generic OBD-II
P2B07

Cylinder 8 Injection Pulse Performance

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Generic OBD-II
P2B08

Cold Start Cylinder 1 Injection Pulse Performance

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Generic OBD-II
P2B09

Cold Start Cylinder 2 Injection Pulse Performance

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Generic OBD-II
P2B0A

Cold Start Cylinder 3 Injection Pulse Performance

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Generic OBD-II
P2B0B

Cold Start Cylinder 4 Injection Pulse Performance

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Generic OBD-II
P2B0C

Cold Start Cylinder 5 Injection Pulse Performance

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Generic OBD-II
P2B0D

Cold Start Cylinder 6 Injection Pulse Performance

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Generic OBD-II
P2B0E

Cold Start Cylinder 7 Injection Pulse Performance

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Generic OBD-II
P2B0F

Cold Start Cylinder 8 Injection Pulse Performance

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Generic OBD-II
P2B10

Cylinder 1 Injection Pulse Offset Not Learned

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Generic OBD-II
P2B11

Cylinder 1 Injection Pulse Offset Exceeded Learning Limit

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Generic OBD-II
P2B12

Cylinder 2 Injection Pulse Offset Not Learned

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Generic OBD-II
P2B13

Cylinder 2 Injection Pulse Offset Exceeded Learning Limit

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Generic OBD-II
P2B14

Cylinder 3 Injection Pulse Offset Not Learned

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Generic OBD-II
P2B15

Cylinder 3 Injection Pulse Offset Exceeded Learning Limit

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Generic OBD-II
P2B16

Cylinder 4 Injection Pulse Offset Not Learned

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Generic OBD-II
P2B17

Cylinder 4 Injection Pulse Offset Exceeded Learning Limit

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Generic OBD-II
P2B18

Cylinder 5 Injection Pulse Offset Not Learned

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Generic OBD-II
P2B19

Cylinder 5 Injection Pulse Offset Exceeded Learning Limit

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Generic OBD-II
P2B1A

Cylinder 6 Injection Pulse Offset Not Learned

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Generic OBD-II
P2B1B

Cylinder 6 Injection Pulse Offset Exceeded Learning Limit

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Generic OBD-II
P2B1C

Cylinder 7 Injection Pulse Offset Not Learned

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Generic OBD-II
P2B1D

Cylinder 7 Injection Pulse Offset Exceeded Learning Limit

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Generic OBD-II
P2B1E

Cylinder 8 Injection Pulse Offset Not Learned

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Generic OBD-II
P2B1F

Cylinder 8 Injection Pulse Offset Exceeded Learning Limit

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Generic OBD-II
P2B20

Hybrid/EV Electronics Coolant Temperature Sensor B Circuit

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Generic OBD-II
P2B21

Hybrid/EV Electronics Coolant Temperature Sensor B Circuit Range/Perfomance

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Generic OBD-II
P2B22

Hybrid/EV Electronics Coolant Temperature Sensor B Circuit Low

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Generic OBD-II
P2B23

Hybrid/EV Electronics Coolant Temperature Sensor B Circuit High

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Generic OBD-II
P2B24

Hybrid/EV Electronics Coolant Temperature Sensor C Circuit

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Generic OBD-II
P2B25

Hybrid/EV Electronics Coolant Temperature Sensor C Circuit Range/Perfomance

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Generic OBD-II
P2B26

Hybrid/EV Electronics Coolant Temperature Sensor C Circuit Low

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Generic OBD-II
P2B27

Hybrid/EV Electronics Coolant Temperature Sensor C Circuit High

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Generic OBD-II
P2B28

Hybrid/EV Battery Pack Coolant Pump A Performance

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Generic OBD-II
P2B29

Hybrid/EV Battery Pack Coolant Pump A Overspeed - Dry Run

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Generic OBD-II
P2B2A

Hybrid/EV Electronics Coolant Pump A Overspeed - Dry Run

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Generic OBD-II
P2B2B

Engine Coolant Temperature Sensor 5 Circuit

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Generic OBD-II
P2B2C

Engine Coolant Temperature Sensor 5 Circuit Range/Performance

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Generic OBD-II
P2B2D

Engine Coolant Temperature Sensor 5 Circuit Low

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Generic OBD-II
P2B2E

Engine Coolant Temperature Sensor 5 Circuit High

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Generic OBD-II
P2B2F

Fan 1 Performance/Stuck Off

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Generic OBD-II
P2B30

Fan 1 Stuck On

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Generic OBD-II
P2B31

Fan 2 Performance/Stuck Off

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Generic OBD-II
P2B32

Fan 2 Stuck On

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Generic OBD-II
P2B33

A Camshaft Profile Actuator B Control Circuit/Open Bank 1

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Generic OBD-II
P2B34

A Camshaft Profile Actuator B Control Circuit Low Bank 1

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Generic OBD-II
P2B35

A Camshaft Profile Actuator B Control Circuit High Bank 1

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Generic OBD-II
P2B36

A Camshaft Profile Actuator B Control Circuit/Open Bank 2

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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.