MAP sensor range/performance on VW TSI/TDI — boost-pressure sensor failure is common, plus charge-pipe leaks on 1.4/2.0 TSI.
Volkswagen P0106 — MAP sensor range/performance on VW TSI/TDI — boost-pressure sensor failure is common, plus charge-pipe leaks on 1.4/2.0 TSI. Typical UK independent garage cost: £100–£320.
What actually causes P0106 on a Volkswagen
The combined MAP/IAT sensor (Bosch part) on 2.0 TSI EA888 engines is a famously short-lived component — fails consistently around 60k–80k miles. On 1.4 TSI EA111 the issue is more often a split charge pipe (the same plastic pipe that causes P0299) or a leaking PCV diaphragm. TDI engines fail the sensor too but at higher mileage.
Volkswagen engines that log P0106
- 1.4 TSI (Golf, Polo, Tiguan, Caddy)
- 1.8/2.0 TSI (Golf GTI, Passat, Tiguan)
- 1.6/2.0 TDI CR (Golf, Passat, Caddy, Tiguan)
How we diagnose P0106 on a Volkswagen
- VCDS — log MAP sensor voltage vs commanded boost during a road test
- Inspect charge pipes and intake hoses for splits (especially the plastic 'doughnut' pipe on 1.4 TSI)
- Check PCV valve diaphragm — common 1.8/2.0 TSI failure
- Replace MAP/IAT sensor as a starting point if EA888 over 50k miles
- Recheck logged readings post-fix
The common misdiagnosis to avoid
VW dealers sometimes quote a complete turbo system check (£300+ labour) when the £45 MAP sensor is the obvious culprit on a 60–80k mile EA888 — refuse and ask them to swap the sensor first.
Volkswagen P0106 repair cost in the UK
Expect £100–£320 including parts and labour at an independent garage. Main-dealer quotes on Volkswagen 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
If you've got a 2.0 TSI over 60,000 miles, just replace the MAP/IAT sensor as a preventative when it's in for any other intake work — the sensor is £45, fits in 3 minutes, and almost every one will fail by 90k miles anyway.
Codes usually seen alongside P0106 on Volkswagen
- P0299
- P2279
- P00BD
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.