P0068 fault code: MAP/MAF - Throttle Position Correlation

P0068 means “MAP/MAF - Throttle Position Correlation” — a fuel and air metering fault in the powertrain.

Can I DIY?

Professional-only boundary. Scan freeze-frame only; do not remove the throttle body or MAF.

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 P0068

Do not drive. Airflow or manifold pressure does not match the throttle opening the computer thinks it commanded. Fuelling then rests on a load picture the controller no longer trusts, which can trigger limp behaviour.

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

  • MAP/MAF - Throttle Position Correlation: Registration number
  • MAP/MAF - Throttle Position Correlation: Exact code P0068 and any companion codes
  • MAP/MAF - Throttle Position Correlation: Whether the engine management light is steady or flashing
  • MAP/MAF - Throttle Position Correlation: Freeze-frame throttle position and whether power surged or died
P00xxFuel and air metering
MOT fail riskif the warning light stays on

What does P0068 mean?

P0068 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 “MAP/MAF - Throttle Position Correlation”. The code itself tells you which circuit or system tripped the fault — not always the exact part that failed.

Will P0068 fail an MOT?

MOT fails on an illuminated engine management light (Major). P0068 is a correlation monitor, not a named MOT throttle-inspection heading.

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

P0068 — quick answers

Is it safe to drive with P0068?

Do not drive. P0068 has no verified driving guidance. Do not drive until a garage has checked why load and throttle disagree. A mismatch here can mean unexpected power or a sudden cut in power.

Will P0068 fail my MOT?

MOT fails on an illuminated engine management light (Major). P0068 is a correlation monitor, not a named MOT throttle-inspection heading.

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.