Peugeot Diagnostics St Helens

Neither. The 1.5 BlueHDi uses the same belt-in-oil design as the PureTech petrol, and that catches a lot of owners out, because plenty have been told their diesel has a chain or a conventional belt behind a cover and so nothing has ever been done to it.

We see these regularly at mileages well past any sensible interval, on cars whose owners genuinely believed the timing was maintenance free. It is not, and the failure mode is the same as the petrol: the belt degrades in the oil and what it sheds goes to the pickup strainer.

Confirming it takes a minute from the registration and the engine code, because Peugeot fitted different engines across the same model years and two identical looking 308s can be different underneath. Ring 01744 808586 and we will tell you exactly what is in yours, or see Peugeot cambelt replacement.

It means the engine management has stored an emissions-related fault and is telling you in words rather than symbols. It is a category, not a diagnosis — it covers lambda sensors, the EGR valve, the particulate filter, fuelling faults and the additive system, and the message is identical for all of them.

That is why the message alone cannot be priced. Two cars showing the same words on the screen can be an afternoon apart in what they need, and the only way to separate them is to read the stored codes with the conditions they set in, then watch the live fuelling with the engine running.

The car is usually still drivable when the message appears, though many drop into a reduced power mode to protect the emissions system. If yours has gone flat as well as lighting up, treat it as the same day rather than next week. Ring 01744 808586, or read what the lamp covers on our Peugeot engine warning light page.

The 1.6 HDi is a strong engine with one well-known weakness: the turbo oil feed. The narrow pipe that carries oil to the turbo bearing blocks with carbon over the years, the bearing runs short of oil, and the turbo fails.

What makes it expensive is what happens next. A replacement turbo fitted onto that same blocked feed fails in exactly the same way, often within a few thousand miles, which is why so many of these engines have been through two.

After that come the usual diesel items: a sooted EGR valve, a particulate filter struggling on short journeys, and injectors that wear and need their correction codes writing when they are replaced. Oil condition and interval matter more on this engine than most, because the oil is what keeps that feed pipe clear. See 1.6 HDi engine repair, or ring 01744 808586 with the mileage and history.

Because the oil supply was never dealt with. On the 1.6 HDi family the feed pipe to the turbo bearing carbons up and restricts, and fitting a new turbo without proving that feed is clear simply starves the new one exactly as it starved the old one.

The tell is a car that has already had a turbo, sometimes recently, and is whistling or smoking again. Owners understandably blame the part or the fitter, and the actual cause is upstream of both.

So on this engine the feed pipe, the return and the sump strainer are checked before anything is ordered, and where the strainer is contaminated that gets dealt with at the same time. It is a bigger job on the day and it is the reason ours do not come back. See Peugeot turbo replacement and turbo actuator work.

Usually because the additive was never dealt with. Peugeot diesels carry a small tank of a cerium-based additive that is dosed into the fuel to lower the temperature the soot burns off at, and when that tank depletes the filter stops regenerating properly however clean it is.

Refilling is only half of it. The level has to be reset in the engine management afterwards, or the car keeps calculating against a figure it no longer has, and you are back where you started.

The other half is the driving. Short journeys never get the exhaust hot enough to finish a regeneration, so the filter fills faster than the additive can compensate for. We read soot loading, differential pressure, regeneration history and additive level together, so you get told which of those applies to your car. See Peugeot DPF cleaning and DPF repair.

A U-code is a communication fault: one control unit has lost contact with another over the car's network. U1802 points at the network rather than at any single component, which is why it so often appears alongside a handful of unrelated warning lights.

The cause is frequently mundane. A tired battery, a corroded earth or a poor connection can drop the voltage enough for modules to stop talking cleanly, and every one of them then reports the neighbour it lost. Replace the module named in the code and you have spent money on a healthy part.

So supply and earths get tested first, then the network is checked module by module to find the one actually dragging it down. That is meter and scope work rather than parts swapping, and our auto electricians do it every week. Ring 01744 808586 with the codes you have been given.

Block exemption rules mean any suitably equipped independent garage can service a car inside its manufacturer warranty, provided the manufacturer schedule is followed and the correct specification parts and fluids go in. Peugeot cannot refuse a claim simply because a franchised dealer did not do the work.

What they can question is evidence. So the schedule has to be the right one for your engine, the oil has to meet the PSA specification for it, and the work has to be recorded properly.

On a PureTech that specification is not a detail to be casual about, because the timing belt lives in the oil and depends entirely on it. Using a cheaper oil that does not meet the standard is one of the few ways to genuinely damage one of these engines while believing you have serviced it. We use the correct grade and record the work so it stands up later. See Peugeot service and repair.

We run Peugeot diagnostics from our own workshop at 232-254 Boundary Road, St Helens, WA10 2PZ, a couple of minutes from the A58 and the Linkway. Peugeots come in from across the borough and from Prescot, Widnes, Warrington and Wigan.

Two things are worth checking wherever you take it. The first is whether they read live data as well as codes, because on a PSA car the code is very often a symptom of voltage or the network rather than the part it names. The second is whether the diagnosis time folds into the repair if you go ahead.

The third, on a Peugeot specifically, is whether they know the additive system exists. It is the difference between a filter that stays clear and one you pay for twice. Ring 01744 808586, or see how we work on car diagnostics in St Helens.

On a Peugeot the spanner is the service indicator, not a fault. The car counts down a mixture of mileage and elapsed time and lights the spanner when the interval is used up. Nothing has broken, and it will not fail an MOT.

It is worth acting on rather than ignoring, and on a PureTech more than most. That engine's timing belt lives in the oil, so oil that is at the end of its life is not just a servicing box to tick — it is the thing the belt depends on.

Once the work is done the counter has to be reset with a scan tool, so a spanner that reappears a week after a service usually means it was never cleared. Book a Peugeot service and it goes out properly, or ring 01744 808586 and tell us the model and mileage and we will confirm which service yours is due.

That is the BSI, the body computer that runs the lights, wipers, locking, display and immobiliser on a Peugeot. A flat battery or a poor jump start can leave it in an odd state, and the result is a car doing several strange things at once rather than one thing wrong.

The important part is that it is usually confused rather than failed. Wipers parking in the wrong place, lights behaving oddly, central locking with a mind of its own and a display showing warnings that make no sense together are all classic symptoms of a BSI that needs resetting and reinitialising.

So the battery and charging get tested first, then the BSI is reset properly. A replacement unit is a last resort and it is rarely what these cars actually need. Ring 01744 808586, or read more on auto electrical work and battery replacement.

Yes, and the first job is proving the control unit is genuinely at fault, because far more cars arrive with a suspected ECU problem than actually have one. Poor supply voltage, a corroded earth and a chafed wire all produce symptoms that look exactly like a dead module.

So supply, earths and the communication lines are tested before anything is condemned. On PSA cars that step matters more than most, because the network will happily report a healthy module as missing when the voltage sags.

Where a replacement or a repair is genuinely needed we can code and configure modules to the car afterwards, which is not optional: a unit fitted without being coded behaves like a faulty one from the moment it goes on. Ring 01744 808586 with the model and the symptom and we will tell you what testing it needs, or read how the wider process works on car diagnostics in St Helens.

Three things: whether the sump comes off so the oil pickup strainer can be inspected, whether the oil pump is replaced at the same time, and how much has to be removed to reach the belt on your particular engine and body.

The strainer is what changes the figure and the part that actually matters. A belt replaced on its own leaves the debris the old one shed sitting in the pickup, which is why some cars come back with low oil pressure a few thousand miles later and the owner assumes the new belt has failed.

Doing it properly means belt, tensioner, oil pump and a sump-off inspection together. It costs more on the day and it is the only version worth paying for. Ring 01744 808586 with the registration and mileage for a real figure, see 208 wet belt replacement, and it can go on pay monthly car repairs if that helps.

Yes. We test and repair in the same building at Boundary Road, so an MOT and the work behind it happen on one visit rather than being passed between two places, and you deal with the person who tested the car.

That matters on a Peugeot because two of the most common failures are diagnostic rather than mechanical. An engine management lamp that is on is a major failure in its own right on any diesel first used from July 2008, and visible smoke from a car fitted with a particulate filter fails on its own.

Both of those need reading rather than adjusting, and a retest after guesswork is a wasted morning. Where the fix is a filter regeneration or a sensor we can often turn it round the same day. Bring the failure sheet if you already have one, ring 01744 808586 to check today's slots, and see MOT in St Helens or what an MOT advisory actually means.

Yes, and on a PureTech it is the single most useful thing you can do alongside the diagnostic, because that engine's timing belt sits in the oil and the oil is what decides how long it lasts.

Servicing one of these properly is not a box-ticking exercise. The right specification oil, changed on time, is genuinely preventative maintenance for the belt and the oil pump, and stretching the interval is how a fifty thousand mile belt becomes a worn one.

Doing both in one visit also means the car is already up with the covers off, so anything the diagnostic turned up gets looked at rather than booked in again. On a diesel we read the additive level and the regeneration history while it is here, which tells you whether the filter is coping with the driving you actually do. Ring 01744 808586 with the model and mileage, or see the 208 and 308 pages.

Take it seriously, because that countdown ends in the car refusing to start. The emissions system is telling you it cannot dose correctly, and once the counter reaches zero the engine management will not allow a restart until the fault is put right.

Topping the tank up sometimes clears it and often does not, because the fault is usually dosing rather than level. Crystallised injectors, a failed dosing pump or a NOx sensor drifted out of range all produce the same warning with a full tank.

We read the system live, including dosing quantity and NOx values, so you know which of those it is before parts are ordered rather than after. It is also worth knowing the countdown does not reset itself once the fault is fixed on some models — it has to be cleared with a tool, which is a five minute job that strands people who do not know about it. Ring 01744 808586 before the countdown gets low, and there is more on AdBlue faults and on Peugeot emissions work.

On a Peugeot limp mode nearly always arrives with a message rather than just a light, and the wording matters. An anti-pollution warning alongside reduced power points at the emissions side; no message at all points more at boost or fuelling.

The emissions version is the one we see most, and it is usually the filter, the additive running out, or a sooted EGR valve making more soot than the system can clear. The car caps power deliberately to stop you making it worse.

The boost version feels different from the driving seat: it pulls normally to about two thousand revs and then simply stops, which is the turbo actuator failing to reach the position it has been asked for, or a split pipe letting the pressure out. Either way the car has already identified the fault, which is why reading it is quick. Do not run it for weeks. Ring 01744 808586 the same day, and if it will not make the journey our mobile mechanics can come to it.

On a HDi the coil symbol has a second job that catches people out: it doubles as the general engine management warning, so a flashing coil light frequently has nothing to do with the plugs and everything to do with fuelling or the additive system.

A steady few seconds on a frosty morning is the plugs doing exactly what they should. Flashing while you drive, particularly alongside an anti-pollution message, points at a stored fault the car is reporting through the only lamp it has.

Where the plugs genuinely have failed, the giveaway on these engines is a start that takes two or three attempts below about five degrees and a first minute that sounds like the engine is running on three. They get tested one at a time with a meter rather than replaced as a set, because on a HDi they seize into the head and a needless removal is how a simple job turns into a broken plug in the cylinder. Tell us how yours starts from cold on 01744 808586, or see Peugeot glow plug replacement.

Yes, and the Partner, Expert and Boxer are a big part of the diesel work here because they suffer the additive and filter problems harder than any car does. A van doing multi-drop work almost never completes a regeneration.

The pattern is always the same. Short hops between drops, long idles at the kerb, and an exhaust that never gets near the temperature the filter needs even with the additive helping. The soot builds, the additive depletes faster than the schedule assumes, and the anti-pollution message appears at the worst possible moment.

Because a van off the road costs money by the hour, we diagnose them first thing wherever the diary allows and we will tell you honestly on the phone whether yours is a same-day job or not. Ring 01744 808586 with the model and the plate, or see Peugeot DPF cleaning.

On this engine it is one of the most useful hours you can spend. The belt history is worth more than the service book cover suggests, and a scan tells you what faults are stored and, just as usefully, what has recently been cleared by somebody hoping you would not look.

What we check is specific rather than general: stored and pending codes across every module, oil level and condition, any sign of the start-up rattle, and on a diesel the regeneration history, soot loading and additive level.

It is far cheaper than finding any of it a month after you have bought the car, and if it comes back clean you get to buy with confidence instead of hope. Ring 01744 808586 with the registration before you commit, and see what drives repair costs if you are weighing up one that needs work.