To prevent confusion, the industry uses standards set by organizations like (Petroleum Convenience Alliance for Technology Standards). While most common fuels have fixed codes (e.g., Unleaded 87), the "Reserved for Proprietary" block exists as a "wildcard" area for innovation or internal tracking. Summary Table: Typical Fuel Code Ranges Code Range Designation 001–062 Standard Industry Fuels Regular, Premium, Diesel, E85 063–070 Reserved for PCATS Future industry-wide standards 071–098 Reserved for Proprietary Custom/Private fleet fuel types 099 Miscellaneous Catch-all for other automotive products
[POS System / Pump Controller] │ ▼ (Sends NACS Code e.g., 002 for Premium Diesel) [Payment Gateway / Network] │ ▼ (Checks fleet profile rules: "Diesel Only") [Authorization Engine] ──❌ Error: "Undefined Fuel-Reserved for Proprietary"
To maintain future scalability, certain segments of the fuel tracking database are labeled as undefined fuel-reserved for proprietary
Since your scanner failed to define it, manually search for the code along with your car’s year, make, and model. Websites like OBD-Codes.com or brand-specific forums (e.g., Bimmerpost for BMW or Ford Truck Enthusiasts ) are excellent resources for finding proprietary definitions. 3. Try a Vehicle-Specific Tool undefined fuel-reserved for proprietary
let currentReserve = FuelReserveType.PROPRIETARY; console.log( Fuel reserved for $currentReserve use );
Instead, this phrase is a generated by your diagnostic scan tool.
When a scan tool communicates with a vehicle, it sends requests using hex codes called PIDs (Parameter IDs). To prevent confusion, the industry uses standards set
An API payload contains an unrecognized fuel category code from a field pump.
: It is often "reserved" for private fleet networks or specific fuel providers to use for their own internal product tracking without conflicting with standard codes like "Unleaded" or "Diesel." Tax Implications : In many systems, "Undefined Fuel" codes are not tax-exempt
or Voyager) is swiped at a terminal that doesn't support the specific proprietary fuel type associated with that card. Testing/Sandboxing: Websites like OBD-Codes
Attempting to override the system with standard fuel could damage the machinery, which is likely optimized specifically for the proprietary mixture. 4. The Future of Proprietary Fuel Systems
Hybrid vehicles feature complex power-splitting strategies between internal combustion engines and electric motors. The ECU frequently tracks "fuel" usage, battery state-of-charge, and alternative energy metrics using non-standard data streams. Generic scanners trying to pull basic fuel metrics from a hybrid often trigger proprietary definitions. 2. Flex-Fuel and Multi-Fuel Systems