MajorCommonEngine

Hyundai ix35: D4HA EGR Valve Sticking Open — Smoke & Rough Idle

D4HA EGR Valve Sticking Open — Smoke & Rough Idle is a common engine fault on the Hyundai ix35 on the 2010–2015 cars, and we rate it major. Putting it right costs $550 to $1,400 at New Zealand independent workshop rates. Below is what goes wrong, the symptoms to notice on a test drive, where to look, and what to ask the seller before you hand over any money. It is one of 41 documented faults on the Hyundai ix35.

Vehicle: Hyundai ix35
Engine: 2.0L
Years: 2010–2015
Fuel: diesel
System: Engine

This page covers the Hyundai ix35 as a model. Some faults only affect particular engines or build years — enter a plate below to narrow the list to one car.

All Hyundai ix35 faults41 documented faults on this model

What you are looking at

No photograph available

We do not hold a verified photograph of the EGR valve yet. We would rather show none than show a picture of a different part.

What goes wrong

The EGR valve on the D4HA 2.0 CRDi engine accumulates carbon deposits that cause it to stick open or in a partially open position. This allows excessive exhaust gas recirculation into the intake, weakening the combustion mixture and causing visible grey or blue smoke at idle, rough or lumpy idle, hesitation on acceleration, and elevated fuel consumption. Valve failure is accelerated by predominantly urban low-speed driving which does not generate sufficient exhaust temperatures to burn off soot deposits around the valve seat and flap.

What you would notice

Grey or blue smoke at idle or on cold startup
Rough or lumpy idle quality
Hesitation and flat spot under acceleration
Increased fuel consumption
EML check engine light with P0400-P0405 diagnostic codes

How to check it

Where to look. Intake manifold area, driver side of engine block

Remove EGR valve and inspect for carbon build-up on valve seat and flap.
Check EGR cooler passages for blockage.
Assess cold idle quality and throttle response during test drive.
If a workshop inspection is possible: Scan for P0400-P0405 fault codes with diagnostic tool.

Parts involved: EGR valve.

What it costs to put right

$550 to $1,400 at New Zealand independent workshop rates. That is for this job on its own, not for the car.

An estimate, in NZD, for the repair as normally carried out. What a specific car costs depends on which part has failed and what it damaged on the way — treat this as the floor for a negotiation, not a quote.

Ask the seller

“Has the EGR valve ever been cleaned or replaced?”
“Is the vehicle used primarily for short urban trips?”
“Has an engine warning light ever appeared?”

Now check the Hyundai ix35 you are actually looking at

Everything above is true of the model, and it is free. What it does not tell you is whether THIS car has been looked after: its odometer history and whether the reading has ever gone backwards, whether there is still money owing on it, whether it has been reported stolen, how many owners it has had and what it is really worth today. That comes from the official records for that plate. Enter the plate for the free details, or get the full history and a market valuation from $13.49.

Not sure what you would be paying for? See what a full KickTyres check includes.

Where this comes from

The failure described above is documented in published sources — owner forums, technical service bulletins, recall notices and workshop write-ups — held in our fault database. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them, and it is a starting point for an inspection rather than a manufacturer statement.

Hyundai ix35 buyer questions

Is d4ha egr valve sticking open — smoke & rough idle serious on a Hyundai ix35?

We rate it major and common on the Hyundai ix35. The EGR valve on the D4HA 2.0 CRDi engine accumulates carbon deposits that cause it to stick open or in a partially open position. This allows excessive exhaust gas recirculation into the intake, weakening the combustion mixture and causing visible grey or blue smoke at idle, rough or lumpy idle, hesitation on acceleration, and elevated fuel consumption. Valve failure is accelerated by predominantly urban low-speed driving which does not generate sufficient exhaust temperatures to burn off soot deposits around the valve seat and flap.

How much does it cost to fix on a Hyundai ix35?

$550 to $1,400 at New Zealand independent workshop rates. That figure is for this job on its own. A car showing the symptoms on this page is usually worth either walking away from or negotiating down by at least the repair figure.

Which Hyundai ix35 years are affected?

Our research records this fault on the 2010–2015 Hyundai ix35. Build dates move around, especially on imported cars, so treat the range as the years to look hardest at rather than a guarantee either way. The official records tell you the exact build and first registration date for the car in front of you.

How do I check for it before I buy?

Remove EGR valve and inspect for carbon build-up on valve seat and flap. Check EGR cooler passages for blockage. Assess cold idle quality and throttle response during test drive. If a workshop inspection is possible: Scan for P0400-P0405 fault codes with diagnostic tool. Look here: Intake manifold area, driver side of engine block