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P1688 Diagnostic Trouble Code Discussion for October 2009

Unmanaged Engine Torque Signal Delivered To TCM


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Trouble Ticket Help Requests for DTC P1688
Help Request Posted
2004 Mazda RX-8 1.3L MIL Lamp on VIN: JM1FE17314
P1688: Metering Oil Pump Control Circuit Initial Check Malfunction. Code 1688 always there, will not clear even before starting engine. I don't want to put a 1000 dollar pump on before I exhaust all options, what do we think?
October 10, 2009
2004 Mazda RX-8 1.3L MIL Lamp on VIN: JM1FE17314
P1688: Metering Oil Pump Control Circuit Initial Check Malfunction. Code 1688 always there, will not clear even before starting engine. I don't want to put a 1000 dollar pump on before I exhaust all options, what do we think?
October 10, 2009