Secondary air injection on VW — 1.4 TSI EA111 SAI pump motor seizure is the headline UK failure.
Volkswagen P0410 — Secondary air injection on VW — 1.4 TSI EA111 SAI pump motor seizure is the headline UK failure. Typical UK independent garage cost: £180–£900.
What actually causes P0410 on a Volkswagen
VW 1.4 TSI P0410 is almost always the SAI pump motor itself — water enters through the air inlet and corrodes the brushes. Combi-valves last better than on Audi 2.0 TFSI but still worth checking. The fault commonly only stores after a cold start, so a hot drive-in won't always reproduce it for diagnosis.
Volkswagen engines that log P0410
- 1.4 TSI EA111 (Polo/Golf 2009–2014)
- 1.4 TSI EA211
- 2.0 TSI EA888
How we diagnose P0410 on a Volkswagen
- VCDS: actuate SAI pump from cold and log current draw
- Remove pump and listen for motor seizure / shake-test
- Inspect combi-valve diaphragm for splits
- Check air rail and head ports for carbon
- Re-route pump inlet hose to prevent water re-ingress on replacement
The common misdiagnosis to avoid
Always drop the SAI pump and shake it before condemning — a rattling pump motor is a 100% certain diagnosis on 1.4 TSI P0410.
Volkswagen P0410 repair cost in the UK
Expect £180–£900 including parts and labour at an independent garage. Main-dealer quotes on Volkswagen 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
Genuine VW pump (PN 06H959253) at £160 is the go-to — pattern parts last 18 months before P0410 returns and you do the job twice.
Codes usually seen alongside P0410 on Volkswagen
- P2444
- P0411
- P2440
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.