TSB B23-035 — Acura Service bulletin
B23-035 is a service bulletin on file with NHTSA for 3 Acura models, 2018–2020 model years, filed and re-filed as 2 documents. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. Service Bulletin - The MIL comes on during vehicle operation due to variations in the purge control solenoid valve spring, the valve wears unevenly and intermittently sticks. This may result in setting DTC P0441 (Evaporative Emission (EVAP) System Purge Flow Malfunction).
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years B23-035 names
Every document filed under B23-035
Manufacturers re-issue a bulletin as the repair changes, and file separate copies for technicians and for owners. All of them carry the same number.
| Document ID | Filed | Type |
|---|---|---|
| B23-035 | January 10, 2024 | Service bulletin |
| B23-035 | December 15, 2023 | Service bulletin |
What B23-035 covers
Engine, Fuel system — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB B23-035?
B23-035 is a service bulletin filed with NHTSA by Acura, covering 3 Acura models across the 2018–2020 model years. NHTSA's summary reads: Service Bulletin - The MIL comes on during vehicle operation due to variations in the purge control solenoid valve spring, the valve wears unevenly and intermittently sticks. This may result in setting DTC P0441 (Evaporative Emission (EVAP) System Purge Flow Malfunction).
Which vehicles does B23-035 cover?
NHTSA's file names Acura MDX (2018–2020); Acura RDX (2018); Acura TLX (2018–2020). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.
Is TSB B23-035 a recall, and is the repair free?
No. B23-035 is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.
How do I get the full text of B23-035?
Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under B23-035, its date, and NHTSA's own summary from the public file.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under B23-035. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.