SpareRadar OBD-II Code Lookup

U1303

Set by the manufacturer, so it means different things on different makes. 2 makes in the table below.

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What U1303 means, by make 2 makes
  • Chevrolet Programming mode active message not received
  • Subaru CAN-LS BUS OFF

Each line is that manufacturer's own meaning for U1303. They are genuinely different faults, not rewordings of one, so a meaning listed against one make says nothing about the others. If your make is not listed, we do not hold it - your manufacturer's service information is the authority.

Code structure U1303
U
Network
communication between control modules
1
Manufacturer-specific
Defined by the vehicle manufacturer, so the meaning varies between makes.
3
0
3
Fault index
identifies the specific fault
Network Manufacturer-specific
Nearby codes in the U1 range
U1261 manufacturer-specific, 1 make U1300 manufacturer-specific, 2 makes U1301 manufacturer-specific, 2 makes U1302 manufacturer-specific, 2 makes U1304 manufacturer-specific, 1 make U1305 manufacturer-specific, 1 make U1311 manufacturer-specific, 1 make U1313 manufacturer-specific, 1 make

Manufacturer code meanings from kierandrewett/obd (b56a07a), used under the MIT licence. Copyright (c) Kieran Drewett. SpareRadar is not affiliated with the dataset's authors.