Optima AH-28 Recalls & Complaints by Model Year
NHTSA lists 3 safety recalls and 0 owner complaints across 8 model years of the Optima AH-28 (1998–2005).
Pick your Optima AH-28 model year
| Model year | Recalls | Complaints |
|---|---|---|
| 2005 Optima AH-28 | 1 | 0 |
| 2004 Optima AH-28 | 2 | 0 |
| 2003 Optima AH-28 | 1 | 0 |
| 2002 Optima AH-28 | 1 | 0 |
| 2001 Optima AH-28 | 1 | 0 |
| 2000 Optima AH-28 | 1 | 0 |
| 1999 Optima AH-28 | 1 | 0 |
| 1998 Optima AH-28 | 1 | 0 |
All Optima AH-28 recalls (3)
Every NHTSA safety campaign that lists a Optima AH-28, most recent first, with the model years each one covers.
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Fuel pump (fuel system)
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…
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…
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Fuel system, diesel
On trolleys and transit coaches equipped with cummins isb diesel engines, the fuel lift pump could fail in a manner which results in engine fuel starvation, which could result in a stall condition. Potential lift pump failure modes include: brush wear out, bushing failure, rotor tab insert failure, or any other failure mode that would…
Remedy: Cummins is conducting the owner notification and remedy for this campaign. Owners may contact cummins at 1-800-343-7357 or optima at 316-779-7700.
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Engine and engine cooling
On certain transit buses equipped with webasto heaters, the burner tubes are made of material that does not meet specifications and could fail prematurely.
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.
Model years: 2004
Other Optima models
Source: NHTSA recall and complaint databases and EPA fuel economy data, October 2026. Complaint counts are owner reports to NHTSA, not verified defects. Recall counts are safety campaigns that list this model year; whether a particular car was already repaired depends on its VIN. How this data is compiled.