MAP sensor performance on Peugeot 1.6 THP/1.6 HDi — shared PSA/BMW Prince engine MAP failure and HDi charge-pipe splits.
Peugeot P0106 — MAP sensor performance on Peugeot 1.6 THP/1.6 HDi — shared PSA/BMW Prince engine MAP failure and HDi charge-pipe splits. Typical UK independent garage cost: £100–£380.
What actually causes P0106 on a Peugeot
The 1.6 THP (PSA/BMW Prince engine, also in Mini Cooper S) has a MAP sensor mounted in a hot location — fails reliably by 80k miles. 1.6 HDi P0106 is usually a split charge-pipe rubber elbow between intercooler and EGR. 2.0 HDi is more often the boost sensor itself.
Peugeot engines that log P0106
- 1.6 THP (208 GTi, 308, 3008, RCZ)
- 1.6 HDi (208, 308, 3008, Partner)
- 2.0 HDi (508, 3008, Expert)
How we diagnose P0106 on a Peugeot
- Lexia / Diagbox — read MAP and IAT live data
- Inspect charge pipes (especially the rubber elbow near the EGR on HDi)
- Replace MAP sensor on 1.6 THP over 70k miles
- Pressure-test intake on diesel variants
- Check for fault codes in BSI as well — sometimes throttle adapt is needed after sensor swap
The common misdiagnosis to avoid
Avoid the PSA main dealer quote for a full 'engine management diagnostic package' (£200+ labour alone) — for 1.6 THP, the MAP sensor failure is so predictable it's worth pre-emptive replacement at any service after 70k.
Peugeot P0106 repair cost in the UK
Expect £100–£380 including parts and labour at an independent garage. Main-dealer quotes on Peugeot 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 the customer drives a 1.6 THP and the car's been to a non-PSA-specialist for 'intake decarbonisation', check the sensor is even plugged back in — we've seen this exact P0106 cause on customer cars three times now.
Codes usually seen alongside P0106 on Peugeot
- P0299
- P0238
- P0335
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.