Audi P0106

MAP sensor performance on Audi 2.0 TSI/TFSI and 2.0 TDI — same VAG MAP/IAT sensor failures as VW, plus PCV diaphragm issues on EA888.

Audi P0106 — MAP sensor performance on Audi 2.0 TSI/TFSI and 2.0 TDI — same VAG MAP/IAT sensor failures as VW, plus PCV diaphragm issues on EA888. Typical UK independent garage cost: £100–£360.

What actually causes P0106 on a Audi

Audi shares the Bosch MAP/IAT sensor with VW EA888 engines — fails consistently between 60k and 90k miles. On EA113 (older A4 B7 2.0 TFSI) the issue is more often a leaking PCV valve diaphragm causing a large vacuum leak that skews MAP readings. 2.0 TDI Audis with P0106 are usually charge-pipe leaks.

Audi engines that log P0106

• 2.0 TFSI EA888 (A4, A5, A6, Q5)
• 2.0 TFSI EA113 (A3, A4, S3)
• 2.0 TDI CR (A3, A4, A6, Q5)

How we diagnose P0106 on a Audi

1. VCDS — log MAP sensor voltage and IAT during driving
2. Inspect PCV valve top (EA113 2.0 TFSI) and intake hoses
3. Pressure-test intake for leaks
4. Replace MAP/IAT sensor on EA888 over 60k miles
5. Walnut-blast intake if engine has heavy carbon deposits (separate issue but worth doing together)

The common misdiagnosis to avoid

Audi dealers will quote a 'complete fuel and air system diagnostic' (£250–£400) — bypass it by asking your indie to swap the MAP sensor first if the car is over 60,000 miles.

Audi P0106 repair cost in the UK

Expect £100–£360 including parts and labour at an independent garage. Main-dealer quotes on Audi are usually higher for the same job, and the spread exists because the cheap cause and the expensive cause throw the same code — pay for the diagnosis before you pay for parts.

Bob's workshop tip

On EA888 2.0 TFSI, the MAP/IAT sensor and PCV valve are the 'service items' your customer never knew existed — quote them together if both are due, customer accepts one bill of £200 instead of two bills of £130.

Codes usually seen alongside P0106 on Audi

• P0299
• P00BD
• P00BC

Symptoms drivers report with P0106

• Sudden loss of power on a motorway slip road — car drops into limp mode at exactly the point you plant the throttle
• Full power returns after a key-off / key-on cycle, then disappears again 10–20 miles later
• Whistling, hissing or a chuff-chuff noise from the engine bay under acceleration
• Slight oil mist around intercooler pipework or a stain on the underside of the bonnet
• MPG drops 4–8 mpg within a tankful, sometimes with faint black smoke on hard acceleration
• Sometimes paired with P0299 (underboost), P0234 (overboost), or P0401 (EGR flow)

Repairs that clear P0106

• Clean or replace MAP sensor
• Smoke-test intake and boost pipes
• Check EGR isn't stuck open

For the generic, all-makes explanation of this code — meaning, every known cause and UK cost bands — see our P0106 guide.

Reading P0106 on a Audi properly

A generic reader will show P0106 and nothing else. What matters is the freeze-frame data stored with it — engine speed, load, coolant temperature and fuel trims at the moment the fault was logged — plus whether any other module on the Audi has logged something at the same time. Codes rarely arrive alone, and the order they were stored in usually points at which one is the cause and which are the consequences.

Clearing P0106 without fixing it

Erasing the code resets the Audi's readiness monitors as well as the light. The fault returns on the next drive cycle if the cause is still there, and in the meantime the incomplete monitors can stop the car passing an emissions check. After a genuine repair, the car is driven until the relevant monitor completes before it is handed back.

Bob's Mechanical Repairs is an independent garage in Birnam, Dunkeld, Perthshire, with 32 years of Bob's experience on the tools. If P0106 is showing on your Audi, bring any scan results with you — we will read the live data ourselves, confirm which cause it actually is, and price the repair before any work starts.