THE CODE DIRECTORY

Diagnostic code references — Page 42.

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

11,786 code references

Generic OBD-II
P0DF0

Generator Inverter Temperature Sensor B Circuit

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Generic OBD-II
P0DF1

Generator Inverter Temperature Sensor B Circuit Intermittent/Erratic

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Generic OBD-II
P0DF2

Generator Inverter Temperature Sensor C Circuit

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Generic OBD-II
P0DF3

Generator Inverter Temperature Sensor C Circuit Intermittent/Erratic

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Generic OBD-II
P0DF4

Mazda ISG V-phase temperature readings disagree

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Generic OBD-II
P0DF5

Mazda ISG V-phase temperature-sensor voltage is low

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Generic OBD-II
P0DF6

Mazda ISG V-phase temperature input exceeds its upper boundary

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Generic OBD-II
P0DF7

Mazda ISG W-phase temperature-signal comparison fails

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Generic OBD-II
P0DF8

Mazda ISG W-phase temperature-sensor input is too low

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Generic OBD-II
P0DF9

Mazda ISG W-phase temperature-sensor input is high

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Generic OBD-II
P0DFA

Generator phase-current faults require the originating ISG code

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Generic OBD-II
P0DFB

Generator Position Exceeding Learn Limit

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Generic OBD-II
P0DFC

Generator Position Sensor Not Learned

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Generic OBD-II
P0DFD

Battery Charger Coolant Control Valve Control Circuit/Open

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Generic OBD-II
P0DFE

Battery Charger Coolant Control Valve Control Circuit Low

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Generic OBD-II
P0DFF

Battery Charger Coolant Control Valve Control Circuit High

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Generic OBD-II
P0E00

Generator Phase U Current Sensor Circuit

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Generic OBD-II
P0E01

Generator Phase U Current Sensor Circuit Range/Performance

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Generic OBD-II
P0E02

U-phase current-sensor low input in Mazda M Hybrid

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Generic OBD-II
P0E03

U-phase current-sensor high input and the charging misconception

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Generic OBD-II
P0E04

Generator Phase V Current Sensor Circuit

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Generic OBD-II
P0E05

Generator Phase V Current Sensor Circuit Range/Performance

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Generic OBD-II
P0E06

V-phase low current-sensor input: what the number does and does not measure

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Generic OBD-II
P0E07

V-phase high input: understanding Mazda ISG fault recurrence

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Generic OBD-II
P0E08

Generator Phase W Current Sensor Circuit

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Generic OBD-II
P0E09

Generator Phase W Current Sensor Circuit Range/Performance

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Generic OBD-II
P0E0A

W-phase low input and the Mazda M Hybrid fail-safe

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Generic OBD-II
P0E0B

W-phase current signal high: separating monitor limits from repair proof

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Generic OBD-II
P0E0C

Generator Phase U-V-W Circuit/Open

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Generic OBD-II
P0E0D

Generator Phase U-V-W Circuit Low

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Generic OBD-II
P0E0E

Generator Phase U-V-W Circuit High

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Generic OBD-II
P0E0F

Generator Inverter Power Supply A Circuit/Open

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Generic OBD-II
P0E10

Low ISG supply voltage reported to the engine controller

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Generic OBD-II
P0E11

High generator supply voltage and temporary hybrid shutdown

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Generic OBD-II
P0E12

Hybrid/EV Battery Pack Coolant Heater A Control Circuit/Open

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Generic OBD-II
P0E13

Hybrid/EV Battery Pack Coolant Heater A Control Circuit Low

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Generic OBD-II
P0E14

Hybrid/EV Battery Pack Coolant Heater A Control Circuit High

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Generic OBD-II
P0E15

Hybrid/EV Battery Pack Coolant Heater A Control Performance

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Generic OBD-II
P0E16

Hybrid/EV Battery Pack Coolant Heater B Control Circuit/Open

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Generic OBD-II
P0E17

Hybrid/EV Battery Pack Coolant Heater B Control Circuit Low

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Generic OBD-II
P0E18

Hybrid/EV Battery Pack Coolant Heater B Control Circuit High

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Generic OBD-II
P0E19

Hybrid/EV Battery Pack Coolant Heater B Control Performance

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Generic OBD-II
P0E1A

Hybrid/EV Battery Pack Coolant Pump B Control Circuit/Open

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Generic OBD-II
P0E1B

Hybrid/EV Battery Pack Coolant Pump B Control Circuit Low

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Generic OBD-II
P0E1C

Hybrid/EV Battery Pack Coolant Pump B Control Circuit High

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Generic OBD-II
P0E1D

Hybrid/EV Battery Pack Coolant Pump B Control Performance

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Generic OBD-II
P0E1E

Hybrid/EV Battery Pack Coolant Pump B Control Circuit Driver Current/Temperature Too High

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Generic OBD-II
P0E1F

Hybrid/EV Battery Pack Coolant Pump A Control Circuit Driver Current/Temperature Too High

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Generic OBD-II
P0E20

Hybrid/EV Battery Pack Coolant Control Valve A Control Circuit Driver Current/Temperature Too High

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Generic OBD-II
P0E21

Hybrid/EV Battery Pack Coolant Control Valve B Control Circuit Driver Current/Temperature Too High

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Generic OBD-II
P0E22

Hybrid/EV Battery Pack Coolant Control Valve C Control Circuit Driver Current/Temperature Too High

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Generic OBD-II
P0E23

Drive Motor Inverter Temperature Sensor G Circuit

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Generic OBD-II
P0E24

Drive Motor Inverter Temperature Sensor G Circuit Range/Performance

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Generic OBD-II
P0E25

Drive Motor Inverter Temperature Sensor G Circuit Low

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Generic OBD-II
P0E26

Drive Motor Inverter Temperature Sensor G Circuit High

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Generic OBD-II
P0E27

Drive Motor Inverter Temperature Sensor G Circuit Intermittent/Erratic

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Generic OBD-II
P0E28

Drive Motor Inverter Temperature Sensor H Circuit

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Generic OBD-II
P0E29

Drive Motor Inverter Temperature Sensor H Circuit Range/Performance

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Generic OBD-II
P0E2A

Drive Motor Inverter Temperature Sensor H Circuit Low

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Generic OBD-II
P0E2B

Drive Motor Inverter Temperature Sensor H Circuit High

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Generic OBD-II
P0E2C

Drive Motor Inverter Temperature Sensor H Circuit Intermittent/Erratic

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Generic OBD-II
P0E2D

Internal Control Module Hybrid/EV Battery Monitor Performance

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Generic OBD-II
P0E2E

Battery Charger A Fuse

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Generic OBD-II
P0E2F

High Voltage Fuse B

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Generic OBD-II
P0E30

High Voltage Fuse C

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Generic OBD-II
P0E31

DC/DC Converter Voltage Sensor A Circuit

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Generic OBD-II
P0E32

converter voltage A is compared with run/crank voltage

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Generic OBD-II
P0E33

converter voltage A remains below one volt

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Generic OBD-II
P0E34

converter voltage A exceeds its high-input boundary

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Generic OBD-II
P0E35

DC/DC Converter Voltage Sensor A Intermittent/Erratic

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Generic OBD-II
P0E36

DC/DC Converter Voltage Sensor BCircuit

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Generic OBD-II
P0E37

converter voltage B performance depends on operating mode

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Generic OBD-II
P0E38

converter voltage B low is a separate channel diagnosis

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Generic OBD-II
P0E39

converter voltage B high requires channel-specific evidence

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Generic OBD-II
P0E3A

DC/DC Converter Voltage Sensor B Intermittent/Erratic

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Generic OBD-II
P0E3B

Hybrid/EV Battery Coolant Pump Overspeed

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Generic OBD-II
P0E3C

Hybrid/EV Battery Coolant Pump Underspeed

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Generic OBD-II
P0E3D

Control Pilot Indicator Control Circuit Low

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Generic OBD-II
P0E3E

Control Pilot Indicator Control Circuit High

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Generic OBD-II
P0E3F

Charge Status Indicator A Control Circuit Low

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Generic OBD-II
P0E40

Charge Status Indicator A Control Circuit High

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Generic OBD-II
P0E41

Charge Status Indicator B Control Circuit Low

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Generic OBD-II
P0E42

Charge Status Indicator B Control Circuit High

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Generic OBD-II
P0E43

Hybrid/EV Powertrain Control Module B

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Generic OBD-II
P0E44

Hybrid/EV Battery Pack Voltage Sense E Circuit

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Generic OBD-II
P0E45

Hybrid/EV Battery Pack Voltage Sense E Circuit Range/Performance

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Generic OBD-II
P0E46

Hybrid/EV Battery Pack Voltage Sense E Circuit Low

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Generic OBD-II
P0E47

Hybrid/EV Battery Pack Voltage Sense E Circuit High

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Generic OBD-II
P0E48

Hybrid/EV Battery Pack Voltage Sense E Circuit Intermittent/Erratic

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Generic OBD-II
P0E49

Hybrid/EV Battery Pack Voltage Sense F Circuit

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Generic OBD-II
P0E4A

Hybrid/EV Battery Pack Voltage Sense F Circuit Range/Performance

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Generic OBD-II
P0E4B

Hybrid/EV Battery Pack Voltage Sense F Circuit Low

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Generic OBD-II
P0E4C

Hybrid/EV Battery Pack Voltage Sense F Circuit High

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Generic OBD-II
P0E4D

Hybrid/EV Battery Pack Voltage Sense F Circuit Intermittent/Erratic

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Generic OBD-II
P0E4E

Engine Failed to Crank

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Generic OBD-II
P0E4F

Motor Electronics Coolant Pump A Control Circuit Intermittent/Erratic

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Generic OBD-II
P0E50

Motor Electronics Coolant Pump B Control Circuit Intermittent/Erratic

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Generic OBD-II
P0E51

DC/DC Converter Current Sensor A Circuit

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Generic OBD-II
P0E52

DC/DC Converter Current Sensor A Circuit Range/Performance

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Generic OBD-II
P0E53

DC/DC Converter Current Sensor A Circuit 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.