2021 VW Jetta 1.4 CEL - P2635

[gregk24]

Just got a CEL on our 2021 Jetta S 1.4 tsi. Directly before this I noticed the cruise control stopped working and it had an (!) next to where the cruise control is normally displayed. About 10 miles after that the CEL came on. I scanned for codes when we got home and it is showing P2635. Going to call dealer and set up an appointment. Until then, do any of you have an idea what this likely is?
Car has 13,500 miles.

 

[AZjeff]

Oh no. We know what comes next

Did you search the code?

 

[Graham Piccinini]

I learned my lesson on VW a long time ago

 

[DemoFly]

Fuel pump A is the low pressure fuel pump near the tank. Fuel Pump Control Module is sensing lower actual pressure than commanded pressure.

On your car, the low pressure pump acts as a lift pump to bring fuel to the high pressure fuel pump on the engine.

Could be several different causes. Nothing obvious and will require testing.

 

[Greasymechtech]

My local VW dealers will simply document, reset, and send me on my way. Then, they might do something if it repeats again. I'm up to about 1/2 dozen non-repeated CELs. With a 6 year warranty, my 2019 VW 1.4T will be traded in at 71 months.

Obviously, a bad pump or PSI sensor.... seen some with bad wiring harnesses(too much resistance causing all kinds of fuel and sensor faults). So, you are at the mercy of your dealer's tech competence. 4 dealers in my 100 mile radius are useless.

 

[dishdude]

Reset the light and see if it comes back.

 

[gregk24]

Reset the light and see if it comes back.

No, my dealer won’t do anything without cel. With my luck it won’t come on again until after the warranty is over lol.

 

[dishdude]

No, my dealer won’t do anything without cel. With my luck it won’t come on again until after the warranty is over lol.

You have a lot of warranty left, if there's really an issue it'll reappear in short order.

 

[gregk24]

My local VW dealers will simply document, reset, and send me on my way. Then, they might do something if it repeats again. I'm up to about 1/2 dozen non-repeated CELs. With a 6 year warranty, my 2019 VW 1.4T will be traded in at 71 months.

Obviously, a bad pump or PSI sensor.... seen some with bad wiring harnesses(too much resistance causing all kinds of fuel and sensor faults). So, you are at the mercy of your dealer's tech competence. 4 dealers in my 100 mile radius are useless.

That wouldn’t fly with me.

 

[gregk24]

You have a lot of warranty left, if there's really an issue it'll reappear in short order.

I agree. I’m just paranoid.

 

[Greasymechtech]

Don't reset. Just take it in. Maybe you'll get a reset, or a new fuel pump, or whatever. Maybe not. Exercise the warranty is your best bet.

 

[dishdude]

Don't reset. Just take it in. Maybe you'll get a reset, or a new fuel pump, or whatever. Maybe not. Exercise the warranty is your best bet.

What changed since post #5 in this thread?

 

[Oillover]

What octane fuel is being used on this 1.4T?

 

[dishdude]

What octane fuel is being used on this 1.4T?

Hopefully premium. Any turbo should get premium.

 

[TCL]

Time for a new one! They'll scratch it up for sure working on it.

 

[DuckRyder]

Never ever reset a code if it is under warranty. make them at least document it.

1.4t do not require premium.

 

[Greasymechtech]

What changed since post #5 in this thread?

Nothing changed. And your point is?

 

[Thermo1223]

Hopefully premium. Any turbo should get premium.

While I agree on principle most DI motors get 87 although I think 89 should be in there instead.

 

[The Critic]

I agree. I’m just paranoid.

Thanks for confirming the obvious.

 

[gregk24]

Never ever reset a code if it is under warranty. make them at least document it.

1.4t do not require premium.

No, I’d never reset it while under warranty. As for premium, not required in this application but that’s all I run out of an abundance of precaution.