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P1600 Diagnostic Trouble Code Discussion for January 2010

PCM Battery Backup Circuit Malfunction


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Trouble Ticket Help Requests for DTC P1600
Help Request Posted
2000 Toyota Corolla CE 1.8L MIL Lamp on VIN: 2T1BR12E3Y
P1600: ECM Battery Backup Circuit Malfunction. ... engine light comes on intermittently.  Sets code P1600-  ECM Battery Circuit.Performed diagnostics and checked back up power supply thru EFI fuse- No problem found. Replaced ECM with good used part and same problem.  Light will set right away or sometimes ...
January 21, 2010
2000 Toyota Corolla CE 1.8L MIL Lamp on VIN: 2T1BR12E3Y
P1600: ECM Battery Backup Circuit Malfunction. ... engine light comes on intermittently.  Sets code P1600-  ECM Battery Circuit.Performed diagnostics and checked back up power supply thru EFI fuse- No problem found. Replaced ECM with good used part and same problem.  Light will set right away or sometimes ...
January 21, 2010