DTC Table
WARNING: This page is about a different car, the 2008 Subaru Impreza. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
When more than two DTC codes are recorded, referring to their combination will make it easy to identify the possible cause. Refer to the list for typical examples.
DTC CHART
| DTC to Check | Diagnostic Code that was displayed. | Probable cause | |||
|---|---|---|---|---|---|
| Body integrated unit | ECM | TCM | VDC/ABS CM | ||
| B1100<Ref. to DTC B1100 INTEG. UNIT SYSTEM ERROR , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > | B1100 | - | - | - | There could be a problem in the body integrated unit. |
| U1221<Ref. to DTC U1221 CAN-HS ECM NO-RECEIVE DATA , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > | U1221 | - | P1718 | C0057 | It is possible that the ECM is faulty. |
| U1222<Ref. to DTC U1222 CAN-HS TCM NO-RECEIVE DATA , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > | U1222 | P0600 | - | C0057 | It is possible that the TCM is faulty. |
| U1223<Ref. to DTC U1223 CAN-HS VDC/ABS NO-RECEIVE DATA , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > | U1223 | P0600 | P1718 | - | It is possible that the VDC/ABS CM is faulty. |
| U1321<Ref. to DTC U1321 CAN-LS METER NO-RECEIVE DATA , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > | U1321 | - | - | - | It is possible that the combination meter is faulty. |
| B1500<Ref. to DTC B1500 KEYLESS UART COM. MALFUNCTION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > | B1500 | - | - | - | It's possible that there is an internal problem in the keyless entry control module, or a open circuit in the communication line. |