2004 Optima Ah-28 problems

Verdict · NHTSA data

Limited data — recalls on file

NHTSA has just 0 complaints on file for the 2004 Optima Ah-28 — too few to judge reliability from owner reports alone — but 2 recall campaigns apply to this year, so any used example should have its VIN checked for completed recall work.

NHTSA complaints

Recalls

Investigations

Crash-involved

Fires reported

Injuries

Deaths

—

NCAP overall

Does the 2004 Optima Ah-28 have recalls?

2 NHTSA recall campaigns on file. Recall repairs are free at franchised dealers.

05V405000Fuel SystemSeptember 13, 2005 · 167 units

Defect

ON CERTAIN TRANSIT VEHICLES AND TROLLEYS EQUIPPED WITH CUMMINS ISB-02 DIESEL ENGINES BUILT WITH EMC CONTROLLED FUEL LIFT PUMPS. ERRATIC VOLTAGE SUPPLY TO THE FUEL LIFT PUMP CAUSES PREMATURE ELECTRIC BRUSH WEAR INTERNAL TO THE FUEL LIFT PUMP. THIS PREMATURE WEAR COULD RESULT IN FUEL LIFT PUMP FAILURE AND IN SOME CASES MAY CAUSE AN ENGINE STALL CONDITION.

Consequence

SHOULD THE ENGINE STALL, A VEHICLE CRASH COULD OCCUR.

Remedy

CUMMINS, IN CONJUNCTION WITH OPTIMA BUS, WILL NOTIFY OWNERS AND REPAIR THE ENGINES BY EMC RECALIBRATION AND REPLACEMENT OF THE FUEL LIFT PUMP AT NO CHARGE TO THE CUSTOMER. OWNERS MAY CONTACT CUMMINS ASSISTANCE CENTER AT 1-800-DIESELS OR OPTIMA BUS AT 1-316-779-7700.

05V108000EngineMarch 24, 2005 · 2 units

Defect

ON CERTAIN TRANSIT BUSES EQUIPPED WITH WEBASTO HEATERS, THE BURNER TUBES ARE MADE OF MATERIAL THAT DOES NOT MEET SPECIFICATIONS AND COULD FAIL PREMATURELY.

Consequence

SHOULD THE BURNER TUBE FAIL, THE COOLANT HEATER COULD OVERHEAT, POSSIBLY RESULTING IN A FIRE.

Remedy

WEBASTO DEALERS WILL REPLACE THE SUSPECTED DEFECTIVE PARTS FREE OF CHARGE. OWNERS MAY CONTACT OPTIMA AT 316-779-7700 OR WEBASTO AT 810-593-6000.

2004 Optima Ah-28 — common questions

Is the 2004 Optima Ah-28 reliable?

The record is thin — 0 NHTSA complaints — so owner-report data can't strongly confirm reliability either way, though 2 recalls should be verified as completed.

Does the 2004 Optima Ah-28 have recalls?

Yes — NHTSA lists 2 recall campaigns affecting the 2004 Optima Ah-28. Recall repairs are free at franchised dealers; check the VIN at nhtsa.gov/recalls to confirm the work was done.

Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.

Compiled by Sharon Ben-Moshe, Founder.

Does the 2004 Optima Ah-28 have recalls?

2004 Optima Ah-28 — common questions

Is the 2004 Optima Ah-28 reliable?

Does the 2004 Optima Ah-28 have recalls?

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