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Powertrain code references — Page 68.

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

9,891 code references in powertrain

Generic OBD-II
P21CB

Reductant Control Module Supply Voltage Low

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Generic OBD-II
P21CC

Reductant Control Module Supply Voltage High

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Generic OBD-II
P21CD

Reductant Quality Module Supply Voltage Low

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Generic OBD-II
P21CE

Reductant Quality Module Performance

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Generic OBD-II
P21CF

Cylinder 1 Injector B Circuit/Open

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Generic OBD-II
P21D0

Cylinder 2 Injector B Circuit/Open

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Generic OBD-II
P21D1

Cylinder 3 Injector B Circuit/Open

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Generic OBD-II
P21D2

Cylinder 4 Injector B Circuit/Open

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Generic OBD-II
P21D3

Cylinder 5 Injector B Circuit/Open

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Generic OBD-II
P21D4

Cylinder 6 Injector B Circuit/Open

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Generic OBD-II
P21D5

Cylinder 7 Injector B Circuit/Open

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Generic OBD-II
P21D6

Cylinder 8 Injector B Circuit/Open

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Generic OBD-II
P21D7

Cylinder 9 Injector B Circuit/Open

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Generic OBD-II
P21D8

Cylinder 10 Injector B Circuit/Open

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Generic OBD-II
P21D9

Cylinder 11 Injector B Circuit/Open

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Generic OBD-II
P21DA

Cylinder 12 Injector B Circuit/Open

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Generic OBD-II
P21DB

Cylinder 1 Injector B Circuit Low

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Generic OBD-II
P21DC

Cylinder 1 Injector B Circuit High

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Generic OBD-II
P21DD

Reductant Heater A Current Too Low

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Generic OBD-II
P21DE

Cylinder 2 Injector B Circuit Low

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Generic OBD-II
P21DF

Cylinder 2 Injector B Circuit High

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Generic OBD-II
P21E0

Cylinder 3 Injector B Circuit Low

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Generic OBD-II
P21E1

Cylinder 3 Injector B Circuit High

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Generic OBD-II
P21E2

Cylinder 4 Injector B Circuit Low

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Generic OBD-II
P21E3

Cylinder 4 Injector B Circuit High

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Generic OBD-II
P21E4

Cylinder 5 Injector B Circuit Low

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Generic OBD-II
P21E5

Cylinder 5 Injector B Circuit High

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Generic OBD-II
P21E6

Cylinder 6 Injector B Circuit Low

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Generic OBD-II
P21E7

Cylinder 6 Injector B Circuit High

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Generic OBD-II
P21E8

Cylinder 7 Injector B Circuit Low

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Generic OBD-II
P21E9

Cylinder 7 Injector B Circuit High

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Generic OBD-II
P21EA

Cylinder 8 Injector B Circuit Low

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Generic OBD-II
P21EB

Cylinder 8 Injector B Circuit High

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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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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.