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U0073 Diagnostic Trouble Code Discussion for December 2008

Control Module Communication Bus Off


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Trouble Ticket Help Requests for DTC U0073
Help Request Posted
2006 Chevrolet HHR LS 2.2L MIL Lamp on VIN: 3GNDA13D06
U0073: bus line fault. ... lite is on, and intermittenly will "lose power-steering assist". I drove it. Seems to run o.k.,shifts o.k., and steers like it should. Freeze frame on the P0700 showed a fairly cold start, (coolant temp was 127 and vehicle speed was low.)Not sure w...
December 02, 2008
2006 Chevrolet HHR LS 2.2L MIL Lamp on VIN: 3GNDA13D06
U0073: bus line fault. ... lite is on, and intermittenly will "lose power-steering assist". I drove it. Seems to run o.k.,shifts o.k., and steers like it should. Freeze frame on the P0700 showed a fairly cold start, (coolant temp was 127 and vehicle speed was low.)Not sure w...
December 02, 2008