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Powertrain code references — Page 79.

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

9,891 code references in powertrain

Generic OBD-II
P2617

Crankshaft Position Signal Output Circuit/Open

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Generic OBD-II
P2618

Crankshaft Position Signal Output Circuit Low

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Generic OBD-II
P2619

Crankshaft Position Signal Output Circuit High

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Generic OBD-II
P261A

Coolant Pump B Control Circuit/Open

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Generic OBD-II
P261B

Coolant Pump B Control Circuit Performance/Stuck Off

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Generic OBD-II
P261C

Coolant Pump B Control Circuit Low

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Generic OBD-II
P261D

Coolant Pump B Control Circuit High

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Generic OBD-II
P261E

Coolant Pump B Control Circuit Stuck On

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Generic OBD-II
P261F

Coolant Pump A Control Circuit Stuck On

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Generic OBD-II
P2620

Throttle Position Output Circuit/Open

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Generic OBD-II
P2621

Throttle Position Output Circuit Low

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Generic OBD-II
P2622

Throttle Position Output Circuit High

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Generic OBD-II
P2623

Injector Control Pressure Regulator Circuit/Open

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Generic OBD-II
P2624

Injector Control Pressure Regulator Circuit Low

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Generic OBD-II
P2625

Injector Control Pressure Regulator Circuit High

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Generic OBD-II
P2626

O2 Sensor Pumping Current Trim Circuit/Open Bank 1 Sensor 1

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Generic OBD-II
P2627

O2 Sensor Pumping Current Trim Circuit Low Bank 1 Sensor 1

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Generic OBD-II
P2628

O2 Sensor Pumping Current Trim Circuit High Bank 1 Sensor 1

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Generic OBD-II
P2629

O2 Sensor Pumping Current Trim Circuit/Open Bank 2 Sensor 1

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Generic OBD-II
P262A

Fuel Injector - Pilot Injection Not Learned

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Generic OBD-II
P262B

Control Module Power Off Timer Performance

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Generic OBD-II
P262C

Sensor Reference Voltage G Circuit/Open

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Generic OBD-II
P262D

Sensor Reference Voltage G Circuit Low

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Generic OBD-II
P262E

Sensor Reference Voltage G Circuit High

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Generic OBD-II
P262F

Sensor Reference Voltage G Circuit Range/Perfomance

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Generic OBD-II
P2630

O2 Sensor Pumping Current Trim Circuit Low Bank 2 Sensor 1

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Generic OBD-II
P2631

O2 Sensor Pumping Current Trim Circuit High Bank 2 Sensor 1

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Generic OBD-II
P2632

Fuel Pump B Control Circuit /Open

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Generic OBD-II
P2633

Fuel Pump B Control Circuit Low

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Generic OBD-II
P2634

Fuel Pump B Control Circuit High

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Generic OBD-II
P2635

Fuel Pump A Low Flow/Performance

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Generic OBD-II
P2636

Fuel Pump B Low Flow/Performance

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Generic OBD-II
P2637

Torque Management Feedback Signal A

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Generic OBD-II
P2638

Torque Management Feedback Signal A Range/Performance

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Generic OBD-II
P2639

Torque Management Feedback Signal A Low

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Generic OBD-II
P263A

MIL Control Circuit Low

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Generic OBD-II
P263B

MIL Control Circuit High

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Generic OBD-II
P263C

Glow Plug Control Driver Performance

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Generic OBD-II
P263D

Reductant Heater Driver Performance

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Generic OBD-II
P263E

Glow Plug Control Module 1 Over Temperature

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Generic OBD-II
P263F

Glow Plug Control Module 2 Over Temperature

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Generic OBD-II
P2640

Torque Management Feedback Signal A High

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Generic OBD-II
P2641

Torque Management Feedback Signal B

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Generic OBD-II
P2642

Torque Management Feedback Signal B Range/Performance

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Generic OBD-II
P2643

Torque Management Feedback Signal B Low

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Generic OBD-II
P2644

Torque Management Feedback Signal B High

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Generic OBD-II
P2645

A Rocker Arm Actuator Control Circuit/Open Bank 1

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Generic OBD-II
P2646

A Rocker Arm Actuator System Performance/Stuck Off Bank 1

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Generic OBD-II
P2647

A Rocker Arm Actuator System Stuck On Bank 1

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Generic OBD-II
P2648

A Rocker Arm Actuator Control Circuit Low Bank 1

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Generic OBD-II
P2649

A Rocker Arm Actuator Control Circuit High Bank 1

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Generic OBD-II
P264A

A Rocker Arm Actuator Position Sensor Circuit Bank 1

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Generic OBD-II
P264B

A Rocker Arm Actuator Position Sensor Circuit Range/Performance Bank 1

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Generic OBD-II
P264C

A Rocker Arm Actuator Position Sensor Circuit Low Bank 1

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Generic OBD-II
P264D

A Rocker Arm Actuator Position Sensor Circuit High Bank 1

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Generic OBD-II
P264E

A Rocker Arm Actuator Position Sensor Circuit Intermittent/Erratic Bank 1

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Generic OBD-II
P264F

Engine Serial Number Not Programmed or Incompatible

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Generic OBD-II
P2650

B Rocker Arm Actuator Control Circuit/Open Bank 1

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Generic OBD-II
P2651

B Rocker Arm Actuator System Performance/Stuck Off Bank 1

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Generic OBD-II
P2652

B Rocker Arm Actuator System Stuck On Bank 1

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Generic OBD-II
P2653

B Rocker Arm Actuator Control Circuit Low Bank 1

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Generic OBD-II
P2654

B Rocker Arm Actuator Control Circuit High Bank 1

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Generic OBD-II
P2655

A Rocker Arm Actuator Control Circuit/Open Bank 2

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Generic OBD-II
P2656

A Rocker Arm Actuator System Performance/Stuck Off Bank 2

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Generic OBD-II
P2657

A Rocker Arm Actuator System Stuck On Bank 2

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Generic OBD-II
P2658

A Rocker Arm Actuator Control Circuit Low Bank 2

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Generic OBD-II
P2659

A Rocker Arm Actuator Control Circuit High Bank 2

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Generic OBD-II
P265A

B Rocker Arm Actuator Position Sensor Circuit Bank 1

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Generic OBD-II
P265B

B Rocker Arm Actuator Position Sensor Circuit Range/Performance Bank 1

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Generic OBD-II
P265C

B Rocker Arm Actuator Position Sensor Circuit Low Bank 1

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Generic OBD-II
P265D

B Rocker Arm Actuator Position Sensor Circuit High Bank 1

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Generic OBD-II
P265E

B Rocker Arm Actuator Position Sensor Circuit Intermittent/Erratic Bank 1

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Generic OBD-II
P265F

Variable A/C Compressor Control Circuit Range/Performance

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Generic OBD-II
P2660

B Rocker Arm Actuator Control Circuit/Open Bank 2

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Generic OBD-II
P2661

B Rocker Arm Actuator System Performance/Stuck Off Bank 2

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Generic OBD-II
P2662

B Rocker Arm Actuator System Stuck On Bank 2

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Generic OBD-II
P2663

B Rocker Arm Actuator Control Circuit Low Bank 2

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Generic OBD-II
P2664

B Rocker Arm Actuator Control Circuit High Bank 2

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Generic OBD-II
P2665

Fuel Shutoff Valve B Control Circuit/Open

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Generic OBD-II
P2666

Fuel Shutoff Valve B Control Circuit Low

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Generic OBD-II
P2667

Fuel Shutoff Valve B Control Circuit High

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Generic OBD-II
P2668

Fuel Mode Indicator Lamp Control Circuit

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Generic OBD-II
P2669

Actuator Supply Voltage B Circuit /Open

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Generic OBD-II
P266A

A Rocker Arm Actuator Position Sensor Circuit Bank 2

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Generic OBD-II
P266B

A Rocker Arm Actuator Position Sensor Circuit Range/Performance Bank 2

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Generic OBD-II
P266C

A Rocker Arm Actuator Position Sensor Circuit Low Bank 2

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Generic OBD-II
P266D

A Rocker Arm Actuator Position Sensor Circuit High Bank 2

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Generic OBD-II
P266E

A Rocker Arm Actuator Position Sensor Circuit Intermittent/Erratic Bank 2

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Generic OBD-II
P266F

A/C Refrigerant Distribution Valve A Control Circuit Driver Current/Temperature Too High

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Generic OBD-II
P2670

Actuator Supply Voltage B Circuit Low

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Generic OBD-II
P2671

Actuator Supply Voltage B Circuit High

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Generic OBD-II
P2672

Injection Pump Timing Offset

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Generic OBD-II
P2673

Injection Pump Timing Calibration Not Learned

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Generic OBD-II
P2674

Injection Pump Fuel Calibration Not Learned

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Generic OBD-II
P2675

Air Cleaner Inlet Control Circuit/Open

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Generic OBD-II
P2676

Air Cleaner Inlet Control Circuit Low

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Generic OBD-II
P2677

Air Cleaner Inlet Control Circuit High

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Generic OBD-II
P2678

Coolant Degassing Valve Control Circuit/Open

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Generic OBD-II
P2679

Coolant Degassing Valve Control Circuit Low

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Generic OBD-II
P267A

B Rocker Arm Actuator Position Sensor Circuit 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.