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.

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

1. Lexia / Diagbox — read MAP and IAT live data
2. Inspect charge pipes (especially the rubber elbow near the EGR on HDi)
3. Replace MAP sensor on 1.6 THP over 70k miles
4. Pressure-test intake on diesel variants
5. 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.

Reading P0106 on a Peugeot 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 Peugeot 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 Peugeot'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 Peugeot, 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.