P0195 fault code: Engine Oil Temperature Sensor

P0195 means “Engine Oil Temperature Sensor” — a fuel and air metering fault in the powertrain.

Can I DIY?

Professional-only boundary. You may read the dipstick; replacing an oil-temp sender is garage work.

Do not DIYReviewed page boundary

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 P0195

Do not drive. The engine oil temperature sensor circuit has a fault. This is lubricant temperature, not coolant and not fuel temperature. A wrong oil-temp input can upset warm-up strategy.

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

  • Engine Oil Temperature Sensor: Number plate
  • Engine Oil Temperature Sensor: Exact code P0195
  • Engine Oil Temperature Sensor: Dipstick level and whether the gauge or lamp showed overheat
P01xxFuel and air metering
MOT fail riskif the warning light stays on

What does P0195 mean?

P0195 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 “Engine Oil Temperature Sensor”. The code itself tells you which circuit or system tripped the fault — not always the exact part that failed.

Will P0195 fail an MOT?

An illuminated engine management light is a Major defect at MOT (automatic fail) until the fault is repaired and the light stays off.

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

P0195 — quick answers

Is it safe to drive with P0195?

Do not drive. P0195 has no verified driving guidance, so do not drive until a garage checks oil temperature sensing. We will not treat this as a mild 'sensor only' drive because the table does not say so.

Will P0195 fail my MOT?

An illuminated engine management light is a Major defect at MOT (automatic fail) until the fault is repaired and the light stays off.

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.