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Powertrain code references — Page 67.

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

9,891 code references in powertrain

Generic OBD-II
P2167

Throttle/Pedal Position Sensor E Maximum Stop Performance

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Generic OBD-II
P2168

Throttle/Pedal Position Sensor F Maximum Stop Performance

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Generic OBD-II
P2169

Exhaust Pressure Regulator Vent Solenoid Control Circuit/Open

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Generic OBD-II
P216A

Fuel Injector Group E Supply Voltage Circuit/Open

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Generic OBD-II
P216B

Fuel Injector Group E Supply Voltage Circuit Low

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Generic OBD-II
P216C

Fuel Injector Group E Supply Voltage Circuit High

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Generic OBD-II
P216D

Fuel Injector Group F Supply Voltage Circuit/Open

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Generic OBD-II
P216E

Fuel Injector Group F Supply Voltage Circuit Low

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Generic OBD-II
P216F

Fuel Injector Group F Supply Voltage Circuit High

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Generic OBD-II
P2170

Exhaust Pressure Regulator Vent Solenoid Control Circuit Low

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Generic OBD-II
P2171

Exhaust Pressure Regulator Vent Solenoid Control Circuit High

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Generic OBD-II
P2172

Throttle Actuator Control System - Sudden High Air Flow Detected

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Generic OBD-II
P2173

Throttle Actuator Control System - High Air Flow Detected

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Generic OBD-II
P2174

Throttle Actuator Control System - Sudden Low Air Flow Detected

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Generic OBD-II
P2175

Throttle Actuator Control System - Low Air Flow Detected

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Generic OBD-II
P2176

Throttle Actuator A Control System - Idle Position Not Learned

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Generic OBD-II
P2177

System Too Lean Off Idle Bank 1

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Generic OBD-II
P2178

System Too Rich Off Idle Bank 1

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Generic OBD-II
P2179

System Too Lean Off Idle Bank 2

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Generic OBD-II
P217A

Fuel Injector Group G Supply Voltage Circuit/Open

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Generic OBD-II
P217B

Fuel Injector Group G Supply Voltage Circuit Low

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Generic OBD-II
P217C

Fuel Injector Group G Supply Voltage Circuit High

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Generic OBD-II
P217D

Fuel Injector Group H Supply Voltage Circuit/Open

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Generic OBD-II
P217E

Fuel Injector Group H Supply Voltage Circuit Low

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Generic OBD-II
P217F

Fuel Injector Group H Supply Voltage Circuit High

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Generic OBD-II
P2180

System Too Rich Off Idle Bank 2

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Generic OBD-II
P2181

Cooling System Performance

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Generic OBD-II
P2182

Engine Coolant Temperature Sensor 2 Circuit

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Generic OBD-II
P2183

Engine Coolant Temperature Sensor 2 Circuit Range/Performance

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Generic OBD-II
P2184

Engine Coolant Temperature Sensor 2 Circuit Low

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Generic OBD-II
P2185

Engine Coolant Temperature Sensor 2 Circuit High

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Generic OBD-II
P2186

Engine Coolant Temperature Sensor 2 Circuit Intermittent/Erratic

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Generic OBD-II
P2187

System Too Lean at Idle Bank 1

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Generic OBD-II
P2188

System Too Rich at Idle Bank 1

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Generic OBD-II
P2189

System Too Lean at Idle Bank 2

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Generic OBD-II
P218A

Throttle Actuator B Control System - Idle Position Not Learned

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Generic OBD-II
P218B

Throttle/Fuel Inhibit B Circuit

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Generic OBD-II
P218C

Throttle/Fuel Inhibit B Circuit Range/Performance

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Generic OBD-II
P218D

Throttle/Fuel Inhibit B Circuit Low

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Generic OBD-II
P218E

Throttle/Fuel Inhibit B Circuit High

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Generic OBD-II
P218F

Reductant No Flow Detected

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Generic OBD-II
P2190

System Too Rich at Idle Bank 2

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Generic OBD-II
P2191

System Too Lean at Higher Load Bank 1

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Generic OBD-II
P2192

System Too Rich at Higher Load Bank 1

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Generic OBD-II
P2193

System Too Lean at Higher Load Bank 2

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Generic OBD-II
P2194

System Too Rich at Higher Load Bank 2

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Generic OBD-II
P2195

O2 Sensor Signal Biased/Stuck Lean Bank 1 Sensor 1

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Generic OBD-II
P2196

O2 Sensor Signal Biased/Stuck Rich Bank 1 Sensor 1

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Generic OBD-II
P2197

O2 Sensor Signal Biased/Stuck Lean Bank 2 Sensor 1

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Generic OBD-II
P2198

O2 Sensor Signal Biased/Stuck Rich Bank 2 Sensor 1

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Generic OBD-II
P2199

Intake Air Temperature Sensor 1/2 Correlation

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Generic OBD-II
P219A

Bank 1 Air-Fuel Ratio Imbalance

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Generic OBD-II
P219B

Bank 2 Air-Fuel Ratio Imbalance

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Generic OBD-II
P219C

Cylinder 1 Air-Fuel Ratio Imbalance

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Generic OBD-II
P219D

Cylinder 2 Air-Fuel Ratio Imbalance

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Generic OBD-II
P219E

Cylinder 3 Air-Fuel Ratio Imbalance

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Generic OBD-II
P219F

Cylinder 4 Air-Fuel Ratio Imbalance

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Generic OBD-II
P21A0

Cylinder 5 Air-Fuel Ratio Imbalance

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Generic OBD-II
P21A1

Cylinder 6 Air-Fuel Ratio Imbalance

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Generic OBD-II
P21A2

Cylinder 7 Air-Fuel Ratio Imbalance

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Generic OBD-II
P21A3

Cylinder 8 Air-Fuel Ratio Imbalance

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Generic OBD-II
P21A4

Cylinder 9 Air-Fuel Ratio Imbalance

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Generic OBD-II
P21A5

Cylinder 10 Air-Fuel Ratio Imbalance

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Generic OBD-II
P21A6

Cylinder 11 Air-Fuel Ratio Imbalance

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Generic OBD-II
P21A7

Cylinder 12 Air-Fuel Ratio Imbalance

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Generic OBD-II
P21A8

Reductant Level Sensor B Circuit

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Generic OBD-II
P21A9

Reductant Level Sensor B Circuit Range/Performance

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Generic OBD-II
P21AA

Reductant Level Sensor B Circuit Low

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Generic OBD-II
P21AB

Reductant Level Sensor B Circuit High

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Generic OBD-II
P21AC

Reductant Level Sensor B Circuit Intermittent/Erratic

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Generic OBD-II
P21AD

Reductant Level Sensor C Circuit

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Generic OBD-II
P21AE

Reductant Level Sensor C Circuit Range/Performance

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Generic OBD-II
P21AF

Reductant Level Sensor C Circuit Low

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Generic OBD-II
P21B0

Reductant Level Sensor C Circuit High

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Generic OBD-II
P21B1

Reductant Level Sensor C Circuit Intermittent/Erratic

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Generic OBD-II
P21B2

Excessive Time To Enter Closed Loop NOx Adsorber Control

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Generic OBD-II
P21B3

Closed Loop NOx Adsorber Control At Limit - Too High

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Generic OBD-II
P21B4

NOx Adsorber - Over Temperature Bank 1

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Generic OBD-II
P21B5

NOx Adsorber - Over Temperature Bank 2

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Generic OBD-II
P21B6

Cold Start Cylinder 1 Injection Timing

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Generic OBD-II
P21B7

Cold Start Cylinder 2 Injection Timing

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Generic OBD-II
P21B8

Cold Start Cylinder 3 Injection Timing

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Generic OBD-II
P21B9

Cold Start Cylinder 4 Injection Timing

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Generic OBD-II
P21BA

Cold Start Cylinder 5 Injection Timing

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Generic OBD-II
P21BB

Cold Start Cylinder 6 Injection Timing

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Generic OBD-II
P21BC

Cold Start Cylinder 7 Injection Timing

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Generic OBD-II
P21BD

Cold Start Cylinder 8 Injection Timing

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Generic OBD-II
P21BE

Cold Start Cylinder 9 Injection Timing

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Generic OBD-II
P21BF

Cold Start Cylinder 10 Injection Timing

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Generic OBD-II
P21C0

Cold Start Cylinder 11 Injection Timing

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Generic OBD-II
P21C1

Cold Start Cylinder 12 Injection Timing

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Generic OBD-II
P21C2

Reductant Heater Relay Control Circuit/Open

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Generic OBD-II
P21C3

Reductant Heater Relay Control Circuit Low

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Generic OBD-II
P21C4

Reductant Heater Relay Control Circuit High

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Generic OBD-II
P21C5

Reductant Level Sensor A Stuck

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Generic OBD-II
P21C6

Reductant Level Sensor B Stuck

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Generic OBD-II
P21C7

Reductant Control Module Power Relay/Relays Control Circuit/Open

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Generic OBD-II
P21C8

Reductant Control Module Power Relay/Relays Control Circuit Low

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Generic OBD-II
P21C9

Reductant Control Module Power Relay/Relays Control Circuit High

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Generic OBD-II
P21CA

Reductant Control Module Supply Voltage Circuit

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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.