Question about 1999 Dodge Grand Caravan
I've lost the instrument cluster display and have a trouble code of P1689. According to the ODB II code reader it's "Manufacturer Control Auxiliary Inpits Auxiliary Outputs". I have no idea what this means. Can you help?
P1689 No Communication between ECM & Ins
P1689 - Indicates a Data link failure between ECM and fuel injection pump. Low power, engine dereated or engine stops.
Posted on May 13, 2009
Same symptoms here. Dash display goes out or is intermittent. Thumping the dash by the temperature control slider can fix this temporarily. Problem in my van was a faulty / overheated ground connector pin in the connector assembly (1 of 2 on panel back) which due to heat had oxidized and was not connecting properly. Re-soldering may fix, but the overheating in my case caused the connector to the rear of the temp control panel to melt away a bit from the pin. Problem just got worse over time. Replacement of temp control / defrost dash panel and rear harness connector needed - got from wrecker for a few bucks - but you have to solder the new connector assembly in. Not a small job, and finicky for some.
Posted on Mar 20, 2013
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Posted on Jan 02, 2017
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