OBD-II code family
Intake and Exhaust Valve Solenoid Circuit Faults (12 codes)
12 related fault descriptions. Use each full code and the exact vehicle service information to identify its circuit, monitored condition, and required tests.
Codes in this family
This is the complete published member list for this guide. Each code retains its own page; shared diagnostic context does not mean that every member has the same test or repair.
- P0075Intake Valve Control Solenoid Circuit (Bank 1)
- P0076Intake Valve Control Solenoid Circuit Low (Bank 1)
- P0077Intake Valve Control Solenoid Circuit High (Bank 1)
- P0078Exhaust Valve Control Solenoid Circuit (Bank 1)
- P0079Exhaust Valve Control Solenoid Circuit Low (Bank 1)
- P0080Exhaust Valve Control Solenoid Circuit High (Bank 1)
- P0081Intake Valve Control Solenoid Circuit (Bank 2)
- P0082Intake Valve Control Solenoid Circuit Low (Bank 2)
- P0083Intake Valve Control Solenoid Circuit High (Bank 2)
- P0084Exhaust Valve Control Solenoid Circuit (Bank 2)
- P0085Exhaust Valve Control Solenoid Circuit Low (Bank 2)
- P0086Exhaust Valve Control Solenoid Circuit High (Bank 2)
What these codes mean
These twelve codes distinguish intake/exhaust valve-control solenoids, banks 1 and 2 and general circuit, low and high conditions. P0075–P0077 concern bank 1 intake; P0078–P0080 bank 1 exhaust; P0081–P0083 bank 2 intake; and P0084–P0086 bank 2 exhaust. Each three-code group retains its circuit/low/high order in the member list.
Identify the installed control hardware before treating the label as a camshaft oil-control diagnosis. An electrical control result and a timing or mechanical-response result require different evidence. Bank numbers follow the engine’s cylinder identification; they do not prescribe front/rear placement, access difficulty or harness length.
Low/high describes the classified electrical condition in the required operating state. It does not universally prove ground/power contact, an open winding, excessive current or zero current. Connected and disconnected readings depend on the actual driver and circuit. Another bank’s valve is not automatically an interchangeable reference or a substitute for the specified limit.
Concrete cases show why the full context matters. GM PIP5302A addresses P0075 after particular wiring work on 2015 Chevrolet City Express vehicles and directs attention to the splice/crimp. Mitsubishi’s covered 2022 DG P0078–P0080 descriptions use voltage monitoring and describe effects on several controls. Neither example makes a generic code proof of a failed phaser or a harmless parked cam.
Preserve the scan and inspect cooled components using the actual diagram. Have the specified supply, control, component and functional checks performed. Avoid direct battery tests, connector swaps, live hot-harness manipulation and loaded road tests. Repair the demonstrated fault, complete any required setup and verify the electrical and applicable operating monitors. A VVT-solenoid price applies only when that particular replacement is the diagnosed job.
Identify the circuit on your vehicle
Match the full DTC, reporting module, and any failure-type suffix to the service information for your exact year, make, model, engine, and equipment. An identifier alone does not establish installed hardware count, location, connector pinout, or a universal measurement.
Where the manufacturer publishes its own meaning for this code, that is the one to work from — it describes the actual component on your vehicle, which the generic definition cannot. Keep the generic description for what it is good for: it tells you which subject area the standard assigned the code to, which is useful context when the two appear to disagree. If they do disagree, follow the manufacturer.