Question about 2003 Dodge Caravan

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Engine light came on

If I turn ignition on/off several times the code P 1684 comes up. Please tell me what that means.  Seems to run OK otherwise.   Thanks for help.   Gene

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Ok... the p1684 means that your battery has been disconnect within the last 50 starts.

Posted on Jun 19, 2008

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My bmw has lost power and engine management light is on in my bmw 645ci


When the Engine Computer detects a problem, it sets a diagnostic fault code and turns the Check Engine light on to tell you. The place to start is by reading that code. Cycle the ignition switch three times within five seconds from "off" to "run" without cranking the engine, leave it in "run", then watch the code numbers show up in the odometer display. There's over a thousand potential fault codes but only those that could adversely affect emissions must turn the Check Engine light on. When the light is off the next time you start the engine, that means it's an intermittent problem and it has the second lowest level of severity. You still do not want to ignore it though because sometimes minor problems can become serious.

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I have a 2001 dodge intrepid it dies when driving starts back up I got the codes 1684 and 1489? can someone please tell me why it wont stay running?


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the code1489 you have problem whit the hight speed radiator fan

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2001 chyrsler town an country code 1684 0135 what do this mean an can i still drive with this on


P1684 means the battery was disconnected in last 50 engine start/stop cycles, did you disconnect the battery?
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Hi wojtek,

Your check engine light is on to tell you that one or more of the many sytems and circuits monitored by your engine control computer is malfunctioning. when the Check Engine light is FLASHING this means that there is a SEVERE problem and that if you continue to operate the vehicle without fixing it, you will destroy some VERY EXPENSIVE parts like the catalytic converters or you may be causing severe engine damage.

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2 Answers

What does check engine code P-0455 and P-1684 mean?


P1684 - Battery Disconnected Within Last 50 Starts

P0455 - Evaporative Emission Control System Leak Detected (no purge flow or large leak)
This indicates a fuel vapor leak or lack of purge flow in the EVAP control system. It means a large leak has been detected. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.

Symptoms: You likely won't notice any drivability problems.

Causes: A code p0455 most likely means one or more of the following has happened:
A loose or improperly affixed gas cap
A non-conforming gas cap (i.e. not factory/original brand)
Other leak or damaged piece in EVAP system

Possible Solutions: With a p0455, the most common repair is to:
Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back.
Otherwise, replace the gas cap, and/or
Inspect the EVAP system for cuts/holes in tubes/hoses (you may hear a vacuum noise or smell fuel), repair if necessary


Test and check it. Hope this helps.

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I have a 2001 Chrysler Town & Country LX. I turned the ignition switch on and off two times. When I turned it on the third time, the odometer started registering codes. The first code was p0302. ...


302 is misfire on cylinder 2. Please see my tip at http://www.fixya.com/cars/r6715318-causes_gasoline_engine_misfires .
1684 is battery disconnected, which you caused when you disconnected it--you can ignore that. You probably have an intermittent misfire. Please follow my troubleshooting steps and let me know if you have questions.

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1 Answer

Every 10 days to 2 weeks the engine starts to shudder (as if it's going to stall) followed by the flashing check engine light. Stopping the car and reseating the gas cap seems to correct the shuddering. At...


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Go to a parts store and run a free diagnostic test. It will tell you the codes that have popped up and then you can fix it from there. That light means the computer is sensing a problem.

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1 Answer

1998 intrepid check engine light


1484 The catalyst seems to be overheating!
1684 The battery has been disconnected within the last 50 starts.

from what i have researched the 1684 is a common code that these vehicles give out..i even got one when i checked mine and i had never disconnected the battery before..so i wouldn't pay to much attention to that one...now the other code is a different story

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