U0140 Diagnostic Trouble Code Discussion for October 2019
Lost Communication With BCM
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| Help Request | Posted | |
| 2006 Mazda 3 S 2.3L Stall, Erratic shifting VIN: JM1BK34386 U0140: Cluster Lost Communication With GEM - Passenger Side Junction Box PJB. The customer brought car to me with complaint of random/ intermittent abrupt un-commanded downshifting. Said that while cruising and range indicator reading 5th gear cluster would start flashing transmission warning indicator and then loud bang followed by... |
October 18, 2019 |
