Intermittent DTC U0073 U0121 U0140 and/or U2100 - keywords code communication fuel gauge inoperative no short speedomoter tach tachometer temperature wire

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

The Speedometer, Tachometer, Coolant Temp, and the fuel gauge are intermittently inoperative. The chime may come on when this happens. DTCs U0073, U0121, U1040, and/or U2100 may be stored as a current or history code. This may be caused by a short in circuits 2500 CAN High and/or 2501 CAN Low.

If the codes are set as current, follow the appropriate flow chart in eSI. If this is an intermittent concern and the codes are set as history codes, check circuits 2500 and 2501 for chafing on center console aluminum support bracket. This harness can be viewed by removing the access cover for the I/P fuse block.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.