Turbocharger CITROËN C4 Grand Picasso 2 1.6 THP 156 hp

The 1.6 THP 156 category brings together exchange-standard turbocharger parts built specifically for this engine output, one of several power levels found within the wider THP engine family shared by multiple manufacturers. It is written for anyone who arrives already knowing their engine code and power figure rather than a part number: the independent garage sorting through a customer's vehicle, the driver stranded with a loss of power, or the enthusiast diagnosing a whistling noise or limp mode before ordering a replacement unit for this exact motorisation.

The range is organised around engine references rather than broad part families, so each listing corresponds to a defined code, power output and application rather than a generic fitment guess. As a wholesale-facing catalogue, the role is to concentrate scattered supply into a single sourced reference per engine variant, verified against OEM data before listing, so a buyer working from a code such as 1.6 THP 156 lands directly on the matching turbocharger reference.

Professional uses by trade

The same 1.6 THP 156 turbocharger reference serves different working situations depending on who is ordering it. The list below sets out how each type of buyer typically approaches this category, from a workshop preparing a scheduled repair to a driver reacting to a sudden loss of power on the road.

• Le garagiste independant : Orders the exact 1.6 THP 156 reference before a scheduled job, cross-checking the OEM number against the customer's vehicle registration to avoid a return.
• Le garagiste independant : Keeps a short list of common THP 156 turbocharger references on hand to shorten the wait time on frequent breakdown diagnoses across this engine family.
• L'automobiliste depanne : Searches by engine code and power figure after a garage diagnosis names the turbocharger as the likely cause of a sudden loss of power or smoke.
• L'automobiliste depanne : Checks compatibility against the exact motorisation printed on the vehicle registration document before ordering, since several THP variants share a similar external appearance.
• Le passionne qui fait lui-meme : Compares the cartridge and geometry type against the failed part removed from the engine bay before confirming this exact reference.
• Der deutsche Kaeufer (DACH) : Looks for the 1.6 THP 156 reference using the engine code stamped on the block, cross-referencing it against the OEM number listed here.

Range comparison

A single reference is listed for the 1.6 THP 156 platform in this category, summarised below with its intended use and the general exchange-standard format in which it is supplied.

How to choose

Choosing the correct turbocharger for a 1.6 THP 156 engine comes down to a small number of checks that determine whether the part fits and functions without further adaptation on this specific motorisation.

1. Match the OEM reference stamped on the original turbocharger housing against the listed part number before ordering, since several THP variants share similar external dimensions.
2. Confirm the engine code and power output printed on the vehicle registration document, as the same displacement can carry different turbocharger references depending on output.
3. Check the actuator type and geometry mechanism, since variable geometry units differ in control linkage from fixed-geometry designs used on other power levels of the same engine.
4. Verify the core deposit process before ordering, as the failed unit is typically expected back once the replacement turbocharger has been installed by a professional.
5. Inspect the cartridge and CHRA condition of the removed part to confirm the turbocharger, rather than the injectors or high-pressure pump, is the actual point of failure.
6. Note the symptoms observed beforehand, loss of power, visible smoke, a whistling noise or limp mode, since these help confirm the diagnosis before the part is ordered.

Storage & logistics

Exchange-standard turbochargers are supplied as reconditioned units built around a returned core, so handling between reception and fitting matters for the part to perform correctly. Units should stay in their original packaging until the vehicle is ready for the professional installation, protecting the actuator linkage and connections from impact. Once removed, the failed unit should be kept in a similarly protective package for the core return process, since it forms part of the exchange-standard cycle underlying this category. Avoiding prolonged exposure to dust or moisture before installation reduces the risk of complications unrelated to the reconditioned part itself.

Since 2026 we have organised the 1.6 THP 156 category around exact engine references rather than generic listings, because this platform spans several manufacturers and a mismatched reference wastes more time than a careful search up front.— autoKUR team

Related categories

Browse our other ranges:

• 1.6 HDi 115 hp
• 1.6 HDi 92 hp
• Fuel injector
• High-pressure pump
• Gasket kit
• Core deposit

Useful references

For regulatory and sector references, see Reglement (UE) 461/2010 — pieces de rechange et garantie constructeur.