P0077 fault code: Intake Valve Control Solenoid Circuit High

P0077 means “Intake Valve Control Solenoid Circuit High” — a fuel and air metering fault in the powertrain.

Can I DIY?

Professional-only boundary. Do not earth-test the intake solenoid; that is garage diagnosis.

Do not DIYReviewed page boundary
ToolsSpecialist equipment

This is the conservative boundary from the reviewed code record. This page has no frozen site-wide safety grade, so it does not publish a repair route.

What to tell the garage about P0077

Do not drive. The intake-valve control solenoid circuit is high, often shorted toward supply, so the solenoid may stay energised and hold intake timing off the intended map point.

Take these reviewed, code-specific details with you. They help the garage confirm the fault without turning this page into a repair procedure.

  • Intake Valve Control Solenoid Circuit High: Registration number
  • Intake Valve Control Solenoid Circuit High: Exact code P0077 and any companion codes
  • Intake Valve Control Solenoid Circuit High: Whether the engine management light is steady or flashing
  • Intake Valve Control Solenoid Circuit High: Whether idle hunted or the engine stalled when pulling away
P00xxFuel and air metering
MOT fail riskif the warning light stays on

What does P0077 mean?

P0077 is a generic (SAE standard) powertrain code reported by your car’s engine control unit. It sits in the P00xx block, which covers fuel and air metering. The stored description is “Intake Valve Control Solenoid Circuit High”. The code itself tells you which circuit or system tripped the fault — not always the exact part that failed.

Will P0077 fail an MOT?

MOT treats a lit engine management light as a Major fail. Intake-solenoid circuit high is not an extra MOT named test.

Before booking your test, check what usually fails on your car: see our MOT pass rates by make and model, built from 33.1 million DVSA tests.

Related guides

Car diagnostic test cost: compare the scopeUK booking marketplaces currently publish diagnostic averages of about £52–£65. Engine management light on: steady or flashing?A steady engine management light means the computer has stored a fault. Drive with caution and get the code read. A flashing light is different — stop when it is safe.
P0001Fuel Volume Regulator Control Circuit/Open P0002Fuel Volume Regulator Control Circuit Range/Performance P0003Fuel Volume Regulator Control Circuit Low P0004Fuel Volume Regulator Control Circuit High P0005Fuel Shutoff Valve 'A' Control Circuit/Open P0006Fuel Shutoff Valve 'A' Control Circuit Low P0007Fuel Shutoff Valve 'A' Control Circuit High P0008Engine Position System Performance

P0077 — quick answers

Is it safe to drive with P0077?

Do not drive. P0077 has no verified driving guidance. Do not drive until checked. A stuck-on intake solenoid can leave valve timing in the wrong place for idle or load.

Will P0077 fail my MOT?

MOT treats a lit engine management light as a Major fail. Intake-solenoid circuit high is not an extra MOT named test.

Fault-code identifiers are standard diagnostic facts. Their explanations and diagnostic guidance on this site are original editorial summaries, not reproduced SAE wording. MOT defect rules reflect the DVSA MOT inspection manual (2026). This page is general guidance for UK drivers, not a substitute for a professional diagnosis.