SEAT P0410

Secondary air injection malfunction on SEAT — older Ibiza/Leon 1.6/1.8 petrol SAI pump seizure.

SEAT P0410 — Secondary air injection malfunction on SEAT — older Ibiza/Leon 1.6/1.8 petrol SAI pump seizure. Typical UK independent garage cost: £140–£480.

What actually causes P0410 on a SEAT

SEAT P0410 — VAG-shared SAI. Pump, check valve, hoses degrade together. Replace as a set.

SEAT engines that log P0410

• 1.6 BSE (Ibiza/Leon)
• 1.8T AUM/AWP

How we diagnose P0410 on a SEAT

1. VAS/VCDS SAI activation
2. Pump current
3. Check valve inspection
4. Full set replacement

The common misdiagnosis to avoid

Older Leon Cupra 1.8T SAI is often deleted by previous owners — re-fitting properly is the only MOT-safe fix.

SEAT P0410 repair cost in the UK

Expect £140–£480 including parts and labour at an independent garage. Main-dealer quotes on SEAT 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

Leon 1.8T P0410 — pump + check valve combo job.

Codes usually seen alongside P0410 on SEAT

• P0411

Symptoms drivers report with P0410

• A loud 'vacuum cleaner' or 'jet engine' noise from under the bonnet for the first 60 seconds after a cold start.
• A sudden drop in revs or a slight stumble just as the air pump shuts off.
• Engine management light (EML) glowing amber, often appearing a minute after driving off from cold.
• A strange 'mooing' or clicking sound when the engine is idling during warm-up.
• The car failing its MOT on the 'Major' defect of having an active EML, even if the emissions are actually okay.

Repairs that clear P0410

• Replace air pump
• Clear or replace hoses
• Replace check valve

For the generic, all-makes explanation of this code — meaning, every known cause and UK cost bands — see our P0410 guide.

Reading P0410 on a SEAT properly

A generic reader will show P0410 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 SEAT 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 P0410 without fixing it

Erasing the code resets the SEAT'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 P0410 is showing on your SEAT, 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.