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THE CODE DIRECTORY

Diagnostic code references — Page 75.

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

11,786 code references

Generic OBD-II
P21EC

Cylinder 9 Injector B Circuit Low

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Generic OBD-II
P21ED

Cylinder 9 Injector B Circuit High

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Generic OBD-II
P21EE

Cylinder 10 Injector B Circuit Low

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Generic OBD-II
P21EF

Cylinder 10 Injector B Circuit High

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Generic OBD-II
P21F0

Cylinder 11 Injector B Circuit Low

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Generic OBD-II
P21F1

Cylinder 11 Injector B Circuit High

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Generic OBD-II
P21F2

Cylinder 12 Injector B Circuit Low

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Generic OBD-II
P21F3

Cylinder 12 Injector B Circuit High

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Generic OBD-II
P21F4

Fuel Control System B Too Lean Off Idle Bank 1

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Generic OBD-II
P21F5

Fuel Control System B Too Rich Off Idle Bank 1

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Generic OBD-II
P21F6

Fuel Control System B Too Lean Off Idle Bank 2

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Generic OBD-II
P21F7

Fuel Control System B Too Rich Off Idle Bank 2

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Generic OBD-II
P21F8

Fuel Control System B Too Lean at Idle Bank 1

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Generic OBD-II
P21F9

Fuel Control System B Too Rich at Idle Bank 1

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Generic OBD-II
P21FA

Fuel Control System B Too Lean at Idle Bank 2

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Generic OBD-II
P21FB

Fuel Control System B Too Rich at Idle Bank 2

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Generic OBD-II
P21FC

Fuel Control System B Too Lean at Higher Load Bank 1

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Generic OBD-II
P21FD

Fuel Control System B Too Rich at Higher Load Bank 1

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Generic OBD-II
P21FE

Fuel Control System B Too Lean at Higher Load Bank 2

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Generic OBD-II
P21FF

Fuel Control System B Too Rich at Higher Load Bank 2

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Generic OBD-II
P2200

NOx Sensor Circuit Bank 1 Sensor 1

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Generic OBD-II
P2201

NOx Sensor Circuit Range/Performance Bank 1 Sensor 1

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Generic OBD-II
P2202

NOx Sensor Circuit Low Bank 1 Sensor 1

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Generic OBD-II
P2203

NOx Sensor Circuit High Bank 1 Sensor 1

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Generic OBD-II
P2204

NOx Sensor Circuit Intermittent Bank 1 Sensor 1

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Generic OBD-II
P2205

NOx Sensor Heater Control Circuit/Open Bank 1 Sensor 1

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Generic OBD-II
P2206

NOx Sensor Heater Control Circuit Low Bank 1 Sensor 1

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Generic OBD-II
P2207

NOx Sensor Heater Control Circuit High Bank 1 Sensor 1

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Generic OBD-II
P2208

NOx Sensor Heater Sense Circuit Bank 1 Sensor 1

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Generic OBD-II
P2209

NOx Sensor Heater Sense Circuit Range/Performance Bank 1 Sensor 1

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Generic OBD-II
P220A

NOx Sensor Supply Voltage Circuit Bank 1 Sensor 1

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Generic OBD-II
P220B

NOx Sensor Supply Voltage Circuit Bank 1 Sensor 2

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Generic OBD-II
P220C

NOx Sensor Supply Voltage Circuit Bank 2 Sensor 1

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Generic OBD-II
P220D

NOx Sensor Supply Voltage Circuit Bank 2 Sensor 2

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Generic OBD-II
P220E

NOx Sensor Heater Control Circuit Range/Performance Bank 1 Sensor 1

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Generic OBD-II
P220F

NOx Sensor Heater Control Circuit Range/Performance Bank 1 Sensor 2

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Generic OBD-II
P2210

NOx Sensor Heater Sense Circuit Low Bank 1 Sensor 1

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Generic OBD-II
P2211

NOx Sensor Heater Sense Circuit High Bank 1 Sensor 1

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Generic OBD-II
P2212

NOx Sensor Heater Sense Circuit Intermittent Bank 1 Sensor 1

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Generic OBD-II
P2213

NOx Sensor Circuit Bank 2

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Generic OBD-II
P2214

NOx Sensor Circuit Range/Performance Bank 2

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Generic OBD-II
P2215

NOx Sensor Circuit Low Bank 2

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Generic OBD-II
P2216

NOx Sensor Circuit High Bank 2

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Generic OBD-II
P2217

NOx Sensor Circuit Intermittent Bank 2

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Generic OBD-II
P2218

NOx Sensor Heater Control Circuit/Open Bank 2

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Generic OBD-II
P2219

NOx Sensor Heater Control Circuit Low Bank 2

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Generic OBD-II
P221A

NOx Sensor 1/2 Correlation Bank 1

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Generic OBD-II
P221B

NOx Sensor 1/2 Correlation Bank 2

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Generic OBD-II
P221C

Reductant Heater B Current Too Low

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Generic OBD-II
P221D

Reductant Heater B Current Too High

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Generic OBD-II
P221E

Reductant Heater C Current Too Low

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Generic OBD-II
P221F

Reductant Heater C Current Too High

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Generic OBD-II
P2220

NOx Sensor Heater Control Circuit High Bank 2

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Generic OBD-II
P2221

NOx Sensor Heater Sense Circuit Bank 2

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Generic OBD-II
P2222

NOx Sensor Heater Sense Circuit Range/Performance Bank 2

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Generic OBD-II
P2223

NOx Sensor Heater Sense Circuit Low Bank 2

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Generic OBD-II
P2224

NOx Sensor Heater Sense Circuit High Bank 2

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Generic OBD-II
P2225

NOx Sensor Heater Sense Circuit Intermittent Bank 2

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Generic OBD-II
P2226

Barometric Pressure Sensor A Circuit

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Generic OBD-II
P2227

Barometric Pressure Sensor A Circuit Range/Performance

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Generic OBD-II
P2228

Barometric Pressure Sensor A Circuit Low

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Generic OBD-II
P2229

Barometric Pressure Sensor A Circuit High

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Generic OBD-II
P222A

Barometric Pressure Sensor B Circuit

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Generic OBD-II
P222B

Barometric Pressure Sensor B Circuit Range/Performance

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Generic OBD-II
P222C

Barometric Pressure Sensor B Circuit Low

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Generic OBD-II
P222D

Barometric Pressure Sensor B Circuit High

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Generic OBD-II
P222E

Barometric Pressure Sensor B Circuit Intermittent/Erratic

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Generic OBD-II
P222F

Barometric Pressure Sensor A/B Correlation

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Generic OBD-II
P2230

Barometric Pressure Sensor A Circuit Intermittent/Erratic

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Generic OBD-II
P2231

O2 Sensor Signal Circuit Shorted to Heater Circuit Bank 1 Sensor 1

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Generic OBD-II
P2232

O2 Sensor Signal Circuit Shorted to Heater Circuit Bank 1 Sensor 2

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Generic OBD-II
P2233

O2 Sensor Signal Circuit Shorted to Heater Circuit Bank 1 Sensor 3

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Generic OBD-II
P2234

O2 Sensor Signal Circuit Shorted to Heater Circuit Bank 2 Sensor 1

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Generic OBD-II
P2235

O2 Sensor Signal Circuit Shorted to Heater Circuit Bank 2 Sensor 2

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Generic OBD-II
P2236

O2 Sensor Signal Circuit Shorted to Heater Circuit Bank 2 Sensor 3

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Generic OBD-II
P2237

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

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Generic OBD-II
P2238

O2 Sensor Positive Current Control Circuit Low Bank 1 Sensor 1

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Generic OBD-II
P2239

O2 Sensor Positive Current Control Circuit High Bank 1 Sensor 1

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Generic OBD-II
P223A

Reductant Heater E Control Circuit

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Generic OBD-II
P223B

Reductant Heater F Control Circuit

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Generic OBD-II
P223C

O2 Sensor Pumping Current Range/Performance Bank 1

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Generic OBD-II
P223D

O2 Sensor Pumping Current Range/Performance Bank 2

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Generic OBD-II
P223E

O2 Sensor Reference Resistance Out Of Range Bank 1

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Generic OBD-II
P223F

O2 Sensor Reference Resistance Out Of Range Bank 2

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Generic OBD-II
P2240

O2 Sensor Positive Current Control Circuit/Open Bank 2 Sensor 1

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Generic OBD-II
P2241

O2 Sensor Positive Current Control Circuit Low Bank 2 Sensor 1

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Generic OBD-II
P2242

O2 Sensor Positive Current Control Circuit High Bank 2 Sensor 1

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Generic OBD-II
P2243

O2 Sensor Reference Voltage Circuit/Open Bank 1 Sensor 1

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Generic OBD-II
P2244

O2 Sensor Reference Voltage Performance Bank 1 Sensor 1

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Generic OBD-II
P2245

O2 Sensor Reference Voltage Circuit Low Bank 1 Sensor 1

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Generic OBD-II
P2246

O2 Sensor Reference Voltage Circuit High Bank 1 Sensor 1

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Generic OBD-II
P2247

O2 Sensor Reference Voltage Circuit/Open Bank 2 Sensor 1

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Generic OBD-II
P2248

O2 Sensor Reference Voltage Performance Bank 2 Sensor 1

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Generic OBD-II
P2249

O2 Sensor Reference Voltage Circuit Low Bank 2 Sensor 1

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Generic OBD-II
P224A

NOx Sensor Heater Resistance Bank 1 Sensor 1

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Generic OBD-II
P224B

NOx Sensor Heater Resistance Bank 1 Sensor 2

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Generic OBD-II
P224C

Alternative Fuel Tank Shutoff Valve A Control Circuit/Open

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Generic OBD-II
P224D

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

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Generic OBD-II
P224E

Alternative Fuel Tank Shutoff Valve A Control Circuit Low

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Generic OBD-II
P224F

Alternative Fuel Tank Shutoff Valve A Control Circuit High

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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.