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Originally Posted by
Sam600
Hey all,
Hoping to get a bit of help with my new to me Tiguan. It’s giving an error P0303.
I’ve changed all four spark plugs and switched around the coils, with P0303 still showing after idling for a short period.
When it drives, the CEL disappears once I get to about 20kmh. On idle it gets rough and that’s when the CEL comes back on then the EPC.
I’ve noticed some white smoke from the exhaust after the spark plug change and I’m not sure if that’s related or just because it’s raining here.
Does anyone have any other suggestions or hints? Should I replace the fuel injector on cylinder 3?
The car is a 2016 132tsi 2.0 4motion with AD1 engine (ea88
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Any help is greatly appreciated
Not sure about the CEL/P0303, though OBDEleven tells me that P0303 is "Cylinder 3 misfire", so maybe check that spark plug.
Regarding the smoke.. I'm no mechanic, but some initial white smoke (steam) shouldn't be anything to stress about, especially if the weather is rainy or cold - it's likely just a bit of condensation/water in the exhaust that gets evaporated off. If it continues long after the engine/exhaust heats up, then it may be more of a concern to get checked out.
If the smoke has a blue-tinge, then you're likely burning oil. That can be more of a concern, though could also be something like seals/gaskets that need replacing.
So... if it's consistent white smoke (or blue-tinged), then I'd personally be booking it into the shop to be looked at.
2018 Arteon R-Line - Black, Sunroof, Dynaudio, 20" Wheels, RacingLine: Stage 2 ECU+DSG|380mm BBK|Intercooler+Hoses|Oil Cooler|R600 Intake|Adjustable Front Droplinks|Dogbone Insert|Subframe Brace+Alignment Kit|Propshaft Alignment Kit, Milltek: Zirotec Downpipe, Harding: Front+Rear Sway Bars|Rear Droplinks, Other: OSRAM Dynamic Indicators, EvcX Throttle Controller, 034 (RED) Coil Packs, Various Carbon Bits
2022 Tiguan Allspace R-Line, Grey - Sunroof, Harmon Kardon
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