ENGINE LIGHT ON AND CODES P1684 AND P0442 DISPLAYED WHEN TURNING KEY OFF AND ON 3 TIMES ON 2001 GRAND CARAVAN. WHAT IS PROBLEM?

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A code P1684 shows that the memory has been cleared recently and is not ... P0122Throttle Position Sensor Circuit Low Voltage; P0123 Throttle Position Sensor ... 2Circuit High Voltage; P0189 Fuel Temperature Sensor 2 Circuit Intermittent ...

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Jun 4, 2010 - 10 posts - ‎4 authors
Sent lots of codes: P1684, P0122, P0118, P0106, P206, P1478, P1598. Can't find anything on the last two, but looks like an electrical prob ...

Dodge Caravan 2003 P1684 P0442 P0455 P0456 - OBD-Codes.com

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Jun 10, 2012 - Your OBD-II Trouble Codes Repair Site. Menu. Home · Trouble Codes... At first it was just the battery code P1684 and the small evap code P0442. Now the other two codes are showing as well. What are the chances that this ...

10127316 WHAT DOES P0122 CODE MEAN? - Download

Battery's been disconnected recently. Maybe the codes just there to let the inspector know of recent tampering?

Put those codes into google for the answer

P0700: EATX Controller DTC present
P1684: Battery was desconnected
P0442: EVAP leak monitor medium (.040). Leak detected.
P0455: EVAP leak monitor large. Leak detected.
P0456: EVAP leak monitor small (.020). Leak detected.

I suggest check the lines and flow it down to the ldp (leak detection pump) that is just behind the steering gear under the van It has a wire connector and 2 large EVAP hoses. look for any split or crack then follow the lines back to the tank. Even a small crack is a leak.

Hope helped with this. Remember rated this help. Good luck.

either gas cap is bad or puge silinoid is bad

p1684 means the battery was disconnected within the last 50 starts!!
this means that the light should go off, if it continues to set that same code i believe it's because the battery voltage is too low!!
so buy a new battery and that should fix your problem!!:-)

P0442 refers to a small leak in the Evaporative Emissions System(It purges fuel tank vapors into the engine to be burned rather than vented into the atmosphere). From time to time the PCM pressurizes this system to check its integrity. If it senses a small leak, then it sets this code. 

Is your gas cap on tight? Recheck it.
The evaporative emission system is probed by applying vacuum to the EVAP system and monitoring for a vacuum decay.
 The engine control module (ECM) monitors the vacuum level through the fuel tank pressure sensor signal.

The EVAP canister purge valve and the EVAP vent solenoid are turned on at the nick of time, allowing the engine to **** up a small vacuum on the entire EVAP system.

 After the requisite vacuum level has been obtained, the EVAP canister purge valve is switched OFF, locking the system entirely.

 If sufficient vacuum level cannot be derived, a large leak is indicated. This can be caused by the following conditions 


The P1684 code simply means that the battery has been disconneted within the last 50 starts.

Your Car has a Lot of Problems, but some not at all expensive to fix

These codes indicate a leak(s) in the fuel system, it can be anywhere, you will have to crawl under and try and see where the leak is, you will need a scanner to turn off the light after repairing the leak(s)

Yah code 1684, it just tells you that battery/computer has been disconnected within last 50 starts. If it doesn't drive you nuts, give it some time, you'll be suprised how quick 50 starts will go by & light should go out

P0442, P0455 AND P0456 are all evaporative leak monitor test failures (small, medium and large leaks). These codes appear anytime the integrity of the air space above the fuel or the lines to/from the vapor canister or purge valve. If there is no damage to the canister, check the lines that run under the van from the fuel tank and canister to the purge valve (under the hood). Also, check to make sure that the hoses are not split or disconnected where they connect to the purge valve. The P1684 is abit more confusing. This is not a valid DTC for your vehicle. It's possible the scanner the shop you went to is an OTC scanner that is reporting a false code. It's also possible they wrote it down incorrectly. The closest thing that makes any sense is a P1486 which would indicate a pinched hose in the same monitor system as the other 3 codes. Best of luck!