P0114 fault code: Intake Air Temperature Sensor 1 Circuit Intermittent

P0114 means “Intake Air Temperature Sensor 1 Circuit Intermittent” — a fuel and air metering fault in the powertrain.

Can I DIY?

Professional-only boundary. Log P0114; flexing a live IAT-1 connector is not a published check.

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 P0114

Do not drive. The first intake-air temperature sensor is erratic, so cold-start enrichment may come and go with a wobbly reading rather than with the actual weather.

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

  • Intake Air Temperature Sensor 1 Circuit Intermittent: Registration number
  • Intake Air Temperature Sensor 1 Circuit Intermittent: Exact code P0114 and how often it returns after clearing
  • Intake Air Temperature Sensor 1 Circuit Intermittent: Wet weather, engine wash, or bumpy roads when it set
  • Intake Air Temperature Sensor 1 Circuit Intermittent: Companion P0110–P0112 or air-flow codes
P01xxFuel and air metering
MOT fail riskif the warning light stays on

What does P0114 mean?

P0114 is a generic (SAE standard) powertrain code reported by your car’s engine control unit. It sits in the P01xx block, which covers fuel and air metering. The stored description is “Intake Air Temperature Sensor 1 Circuit Intermittent”. The code itself tells you which circuit or system tripped the fault — not always the exact part that failed.

Will P0114 fail an MOT?

An illuminated engine management light is a Major defect at MOT until repaired and the lamp stays off. P0114 is intermittent; a lamp that is on in the test bay still fails regardless of weather.

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.
P0100Mass or Volume Air Flow Circuit P0101Mass or Volume Air Flow Circuit Range/Performance P0102Mass or Volume Air Flow Circuit Low Input P0103Mass or Volume Air Flow Circuit High Input P0104Mass or Volume Air Flow Circuit Intermittent P0105Manifold Absolute Pressure/Barometric Pressure Circuit P0106Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance P0107Manifold Absolute Pressure/Barometric Pressure Circuit Low Input

P0114 — quick answers

Is it safe to drive with P0114?

Do not drive. We have no verified driving guidance for P0114 — treat as do not drive until checked. An intermittent IAT-1 circuit can look 'fine' after a restart and still be unsafe to chase live.

Will P0114 fail my MOT?

An illuminated engine management light is a Major defect at MOT until repaired and the lamp stays off. P0114 is intermittent; a lamp that is on in the test bay still fails regardless of weather.

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.