Editing Openai/69606181-ab0c-8001-96cc-1653bd658833 (section)

=== Assistant: At 118k miles on a 2014 Audi Q5 2.0T, P0087 is no longer a “maybe” problem — it’s a known wear-out issue. ===
At 118k miles on a 2014 Audi Q5 2.0T, P0087 is no longer a “maybe” problem — it’s a known wear-out issue. Based on mileage alone, here’s the straight, no-BS answer.

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==== ### ====

At 118k:
* The cam follower is almost certainly worn
* Many fail between 90k–120k
* Once worn, the HPFP cannot build enough rail pressure
* ECU throws P0087 under load

⚠️ This is time-sensitive
If the follower punches through, it eats the camshaft → $3k+ repair.

==== ### ====

Pull the HPFP and inspect the cam follower
* Takes ~30–45 minutes
* Very cheap part
* 100% diagnostic certainty

Outcomes:
* Follower worn/dished → Replace follower + likely HPFP
* Follower punched → Stop driving → cam inspection required

===== Replace the fuel filter (integrated regulator) =====
* Original filters at 118k are usually restricted
* Starves the HPFP
* Common contributor to P0087

Even if it’s not the root cause, it will become one soon.

===== Test low-pressure in-tank fuel pump =====
* Weak pump = HPFP can’t keep up
* Especially shows up during acceleration
* Often paired with hard starts

==== ❌ Replace injectors ====
❌ Replace the rail pressure sensor first
❌ Ignore the code and “see what happens”

Those are how people turn a $200–600 fix into thousands.

==== Until this is addressed: ====
* Avoid hard acceleration
* Avoid highway pulls
* Do NOT tow
* If it goes into limp mode → stop pushing it

Lean running on this engine kills parts quietly.

==== At 118k, this is no longer diagnostic speculation. ====
This is maintenance debt coming due.

If you want, tell me:
* Do you wrench yourself or shop only?
* Any other codes present?
* Does it hesitate mainly above 3k RPM?

I’ll tell you exactly which parts to buy (OEM vs aftermarket, what’s worth upgrading, what isn’t).