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B1038 Diagnostic Trouble Code Discussion for August 2004

no uart comm.

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Trouble Ticket Help Requests for DTC B1038
Help Request Posted
1995 Buick Riviera 3.8L MIL Lamp on, NO COMMUNICATION VIN: 1G4GD22KXS
B1038: no uart comm. ... runs ok. Ck engine lamp is on. Tech 2 will not comm. with powertrain. But will comm. with body and give code B1038. On pin 9 of ALDL (UART LINE) we have 4.87 volts steady. Related issues are the atc control head was flashing. Has anyone seen this problem. ...
August 21, 2004