P0088 on Kia vehicles Fuel rail pressure is above what the system commanded

A model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.

Owners’ own words, scrubbed of anything identifying. Unverified reports filed with NHTSA — what was said, not a finding that it was true.

Bulletins and campaigns Kia filed with NHTSA whose summary names P0088. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

• WTY034_TSB Warranty extension
  2024-05-23 · Fuel/Propulsion System
• TECHNICAL SERVICE BULLETIN: WARRANTY EXTENSION CAMPAIGN: HIGH-PRESSURE FUEL PUMP REPLACEMENT (WTY034) - his bulletin provides information associated with the ‘Warranty Extension Program’ (WTY034) to diagnose the ‘Malfunction Indicator Lamp’ (MIL) accompanied by DTC P0088 and, if necessary, replace the high-pressure fuel pump on 2019-2021 MY Sedona vehicles manufactured from February 13, 2018 throu
• WTY034_TSB_R1 Warranty extension
  2024-09-21 · Fuel/Propulsion System
• TECHNICAL SERVICE BULLETIN: WARRANTY EXTENSION CAMPAIGN: HIGH-PRESSURE FUEL PUMP REPLACEMENT (WTY034) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information associated with the ‘Warranty Extension Program’ (WTY034) to diagnose the ‘Malfunction Indicator Lamp’ (MIL)
• WTY034_TSB_R2 Service bulletin
  2025-03-27 · Fuel/Propulsion System
• TECHNICAL SERVICE BULLETIN: WARRANTY EXTENSION CAMPAIGN: HIGH-PRESSURE FUEL PUMP REPLACEMENT (WTY034) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information associated with the ‘Warranty Extension Program’ (WTY034) to diagnose the ‘Malfunction Indicator Lamp’ (MIL)
• SC281Y_TSB Service bulletin
  2025-10-02 · Fuel/Propulsion System
• TECHNICAL SERVICE BULLETIN: SUBSEQUENT REPAIR ACTION: HIGH-PRESSURE FUEL PUMP REPLACEMENT INSTRUCTIONS FOR DTC P0088 (SC281Y) - This bulletin provides information related to the Technical Service Bulletin previously published under SC281 titled “High-Pressure Fuel Pump Inspection /Replacement and ECM Software Upgrade.”

A stored code names the test that failed, never the part that caused it. The record above is what Kia and its owners have filed about it; the code’s page across every make has the whole file.