Computer Codes
427 OBD-II diagnostic trouble codes in this category.
Showing page 4 of 5 (427 codes total)
| Code | Description | Subsystem | Severity |
|---|---|---|---|
| P2585 | Fuel Additive Control Module Warning Lamp Request | ECM/PCM | Medium |
| P2586 | Turbocharger Boost Control Position Sensor B Circuit | Charging System | High |
| P2587 | Turbocharger Boost Control Position Sensor B Circuit Range/Performance | Charging System | High |
| P2588 | Turbocharger Boost Control Position Sensor B Circuit Low | Charging System | High |
| P2589 | Turbocharger Boost Control Position Sensor B Circuit High | Charging System | High |
| P2590 | Turbocharger Boost Control Position Sensor B Circuit Intermittent/Erratic | Charging System | High |
| P2591 | Cruise Control Front Distance Range Sensor Left | ECM/PCM | Medium |
| P2592 | Cruise Control Front Distance Range Sensor Right | ECM/PCM | Medium |
| P2593 | Turbocharger Speed Sensor B Circuit | Charging System | High |
| P2594 | Turbocharger Speed Sensor B Circuit Range/Performance | Charging System | High |
| P2595 | Turbocharger Speed Sensor B Circuit Low | Charging System | High |
| P2596 | Turbocharger Speed Sensor B Circuit High | Charging System | High |
| P2597 | Turbocharger Speed Sensor B Circuit Intermittent | Charging System | High |
| P25E2 | A Camshaft Position Control Performance Bank 2 | ECM/PCM | Medium |
| P25E3 | B Camshaft Position - Stuck In Locked Position Bank 1 | Powertrain Control | Medium |
| P25E4 | B Camshaft Position - Unable to Achieve Locked Position Bank 1 | Powertrain Control | Medium |
| P25E5 | B Camshaft Position Control Performance Bank 1 | Powertrain Control | Medium |
| P25E6 | B Camshaft Position - Stuck In Locked Position Bank 2 | Powertrain Control | Medium |
| P25E7 | B Camshaft Position - Unable to Achieve Locked Position Bank 2 | Powertrain Control | Medium |
| P25E8 | B Camshaft Position Control Performance Bank 2 | Powertrain Control | Medium |
| P2604 | Intake Air Heater A Circuit Range/Performance | ECM/PCM | Medium |
| P2605 | Intake Air Heater B Circuit/Open | ECM/PCM | Medium |
| P2606 | Intake Air Heater B Circuit Range/Performance | ECM/PCM | Medium |
| P2607 | Intake Air Heater B Circuit Low | ECM/PCM | Medium |
| P2608 | Intake Air Heater B Circuit High | ECM/PCM | Medium |
| P2609 | Intake Air Heater System Performance | ECM/PCM | Medium |
| P2610 | ECM/PCM Internal Engine Off Timer Performance | ECM Internal | Medium |
| P2614 | Camshaft A Position Signal Output Circuit/Open Bank 1 | ECM/PCM | Medium |
| P2615 | Camshaft A Position Signal Output Circuit Low Bank 1 | ECM/PCM | Medium |
| P2616 | Camshaft A Position Signal Output Circuit High Bank 1 | ECM/PCM | Medium |
| P2617 | Crankshaft Position Signal Output Circuit/Open | ECM/PCM | Medium |
| P2618 | Crankshaft Position Signal Output Circuit Low | ECM/PCM | Medium |
| P2619 | Crankshaft Position Signal Output Circuit High | ECM/PCM | Medium |
| P2620 | Throttle Position Output Circuit/Open | ECM/PCM | Medium |
| P2621 | Throttle Position Output Circuit Low | ECM/PCM | Medium |
| P2622 | Throttle Position Output Circuit High | ECM/PCM | Medium |
| P2623 | Injector Control Pressure Regulator Circuit/Open | ECM/PCM | Medium |
| P2624 | Injector Control Pressure Regulator Circuit Low | ECM/PCM | Medium |
| P2625 | Injector Control Pressure Regulator Circuit High | ECM/PCM | Medium |
| P2632 | Fuel Pump B Control Circuit /Open | ECM/PCM | Medium |
| P2633 | Fuel Pump B Control Circuit Low | ECM/PCM | Medium |
| P2634 | Fuel Pump B Control Circuit High | ECM/PCM | Medium |
| P2635 | Fuel Pump A Low Flow/Performance | ECM/PCM | Medium |
| P2636 | Fuel Pump B Low Flow/Performance | ECM/PCM | Medium |
| P2637 | Torque Management Feedback Signal A | ECM/PCM | Medium |
| P2638 | Torque Management Feedback Signal A Range/Performance | ECM/PCM | Medium |
| P2639 | Torque Management Feedback Signal A Low | ECM/PCM | Medium |
| P2640 | Torque Management Feedback Signal A High | ECM/PCM | Medium |
| P2641 | Torque Management Feedback Signal B | ECM/PCM | Medium |
| P2642 | Torque Management Feedback Signal B Range/Performance | ECM/PCM | Medium |
| P2643 | Torque Management Feedback Signal B Low | ECM/PCM | Medium |
| P2644 | Torque Management Feedback Signal B High | ECM/PCM | Medium |
| P2668 | Fuel Mode Indicator Lamp Control Circuit | ECM/PCM | Medium |
| P2669 | Actuator Supply Voltage B Circuit /Open | ECM/PCM | Medium |
| P2670 | Actuator Supply Voltage B Circuit Low | ECM/PCM | Medium |
| P2671 | Actuator Supply Voltage B Circuit High | ECM/PCM | Medium |
| P2672 | Injection Pump Timing Offset | ECM/PCM | Medium |
| P2673 | Injection Pump Timing Calibration Not Learned | ECM/PCM | Medium |
| P2674 | Injection Pump Fuel Calibration Not Learned | ECM/PCM | Medium |
| P2675 | Air Cleaner Inlet Control Circuit/Open | ECM/PCM | Medium |
| P2676 | Air Cleaner Inlet Control Circuit Low | ECM/PCM | Medium |
| P2677 | Air Cleaner Inlet Control Circuit High | ECM/PCM | Medium |
| P2684 | Actuator Supply Voltage C Circuit/Open | ECM/PCM | Medium |
| P2685 | Actuator Supply Voltage C Circuit Low | ECM/PCM | Medium |
| P2686 | Actuator Supply Voltage C Circuit High | ECM/PCM | Medium |
| P2687 | Fuel Supply Heater Control Circuit/Open | ECM/PCM | Medium |
| P2688 | Fuel Supply Heater Control Circuit Low | ECM/PCM | Medium |
| P2689 | Fuel Supply Heater Control Circuit High | ECM/PCM | Medium |
| P2690 | Cylinder 5 Injector Data Incompatible | ECM/PCM | Medium |
| P2691 | Cylinder 6 Injector Data Incompatible | ECM/PCM | Medium |
| P2692 | Cylinder 7 Injector Data Incompatible | ECM/PCM | Medium |
| P2693 | Cylinder 8 Injector Data Incompatible | ECM/PCM | Medium |
| P2694 | Cylinder 9 Injector Data Incompatible | ECM/PCM | Medium |
| P2695 | Cylinder 10 Injector Data Incompatible | ECM/PCM | Medium |
| P2696 | Injector Data Incompatible | ECM/PCM | Medium |
| P2697 | Exhaust Aftertreatment Fuel Injector A Circuit/Open | ECM/PCM | Medium |
| P2698 | Exhaust Aftertreatment Fuel Injector A Performance | ECM/PCM | Medium |
| P2699 | Exhaust Aftertreatment Fuel Injector A Circuit Low | ECM/PCM | Medium |
| P26E2 | Fuel Mode Indicator Lamp Control Circuit Low | ECM/PCM | Medium |
| P26E4 | Starter Relay B Circuit | Powertrain Control | Medium |
| P26E5 | Starter Relay B Circuit Low | Powertrain Control | Medium |
| P26E6 | Starter Relay B Circuit High | Powertrain Control | Medium |
| P26E7 | Actuator Supply Voltage D Circuit/Open | Powertrain Control | Medium |
| P26E8 | Actuator Supply Voltage D Circuit Low | Powertrain Control | Medium |
| P26E9 | Actuator Supply Voltage D Circuit High | Powertrain Control | Medium |
| P2E15 | Intermediate Shaft Selection Actuator Position Sensor Circuit | Powertrain Control | Medium |
| P2E16 | Intermediate Shaft Selection Actuator Position Sensor Range/Performance | Powertrain Control | Medium |
| P2E17 | Intermediate Shaft Selection Actuator Position Sensor Circuit Low | Powertrain Control | Medium |
| P2E18 | Intermediate Shaft Selection Actuator Position Sensor Circuit High | Powertrain Control | Medium |
| P2E19 | Intermediate Shaft Selection Acutator Position Sensor Circuit Intermittent/Erratic | Powertrain Control | Medium |
| P2E62 | Engine Coolant Bypass Valve E Control Circuit/Open | Powertrain Control | Medium |
| P2E63 | Engine Coolant Bypass Valve E Control Circuit Low | Powertrain Control | Medium |
| P2E64 | Engine Coolant Bypass Valve E Control Circuit High | Powertrain Control | Medium |
| P2E65 | Engine Coolant Bypass Valve E Stuck/Open | Powertrain Control | Medium |
| P2E66 | Engine Coolant Bypass Valve E Range/Performance | Powertrain Control | Medium |
| P2E67 | Engine Coolant Bypass Valve E Stuck Closed | Powertrain Control | Medium |
| P2E68 | System Too Lean During Cylinder Deactivation Bank 1 | Powertrain Control | Medium |
| P2E69 | System Too Rich During Cylinder Deactivation Bank 1 | Powertrain Control | Medium |
| P2E6A | System Too Lean During Cylinder Deactivation Bank 2 | Powertrain Control | Medium |
| P2E6B | System Too Rich During Cylinder Deactivation Bank 2 | Powertrain Control | Medium |
About Computer Codes
This page lists all 427 OBD-II diagnostic trouble codes classified under the Computer category. These codes are stored by your vehicle's onboard computer when a sensor detects a malfunction in the computer system. Each code begins with a letter indicating the system (P for Powertrain, B for Body, C for Chassis, U for Network) followed by four digits that identify the specific fault.
When your check engine light comes on, an OBD-II scanner reads these stored codes to help pinpoint the problem. Generic codes (where the second digit is 0) follow the SAE J2012 standard and mean the same thing on every vehicle. Manufacturer-specific codes (where the second digit is 1) may have different meanings depending on the vehicle brand.
Click any code in the table above to see its full description, possible causes, common symptoms, and step-by-step repair guidance. Use the search box to quickly find a specific code within this category.