U2516

DTC U2516, sometimes indicated as U251600 is an OBD diagnostic trouble code indicating a manufacturer-specific fault with the vehicle user network.

DTC Trouble Code Search

Bulletins

Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.

01012004 - ENGINE AND ENGINE COOLING:ENGINE
MAZDA: Engine no crank along with immobilizer malfunction. Diagnostic trouble codes P1260 (immobilizer system problem) and B1600/B1602 (key id number cannot be read) and/or U2516 (ic-can bus off transmit error) may be stored in memory. Mazda m-