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External system not connected - 2004 Lexus LS 430

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When I press the "map" button a alert pops up and says,"External System Not Connected" Can somebody please help me?


it seems no one has loaded a map of your city into its memory before ,so its looking for a cell system hook up to get one , you could connect it to your cell phone via Bluetooth and then it could get a map that way

Feb 26, 2016 | 2003 Toyota Prius

1 Answer

Codes351/420/442/455 what do they mean


(M) Check Engine Light ("Malfunction Indicator Light" or "Check Engine") will illuminate during engine operation if this Diagnostic Trouble Code was recorded (depending if required by CARB and/or EPA). MIL is displayed as an engine icon on the instrument cluster.

P0351 (M)
Ignition Coil A Primary/Secondary Circuit
Peak primary circuit current not achieved with maximum dwell time.

P0420 (M)
Catalyst System Efficiency Below Threshold (Bank 1)
Catalyst 1/1 efficiency below required level.

P0442 (M)
Evaporative Emission Control System Leak Detected (medium leak)
A 0.040 leak has been detected in the evaporative system. (A faulty gas cap may cause this code). Also see TSB 25-001-02A. Note: The respective Powertrain Diagnostic Procedures Manual will direct the technician to determine if the vehicle evaporative system has an external system leak. Examples of some external system leaks are: a loose gas cap, a disconnected evaporative system hose, or a loose hose connection. Remember that the evaporative system may also have an internal system leak. This internal leak may be caused by an intermittent or permanently stuck open Duty Cycle Purge (DCP) valve. This leak source is considered to be internal because any escaping emissions enter into the engine system and not directly into the atmosphere, unlike an external leak. An internal leak may cause one of the above DTC?s. Possible causes of a stuck open (intermittent or permanent) DCP valve are: 1. Corrosion due to system moisture or possible water intrusion into the system.

P0455 (M)
Evaporative Emission Control System Leak Detected (large leak)
A large leak has been detected in the evaporative system. See TSB 25-001-02. Also, possible faulty or loose gas cap. Note: The respective Powertrain Diagnostic Procedures Manual will direct the technician to determine if the vehicle evaporative system has an external system leak. Examples of some external system leaks are: a loose gas cap, a disconnected evaporative system hose, or a loose hose connection. Remember that the evaporative system may also have an internal system leak. This internal leak may be caused by an intermittent or permanently stuck open Duty Cycle Purge (DCP) valve. This leak source is considered to be internal because any escaping emissions enter into the engine system and not directly into the atmosphere, unlike an external leak. An internal leak may cause one of the above DTC?s. Possible causes of a stuck open (intermittent or permanent) DCP valve are: 1. Corrosion due to system moisture or possible water intrusion into the system.

May 01, 2014 | Jeep Grand Cherokee Cars & Trucks

1 Answer

Toyota navigational system external system not connected


I have the same problem like your but i checked on toyota forum saw that an engineer was solved the problem. He said the vibration impact from the car and poorly well on the circuit board which cause the problem. here how he does it.
1. Remove the gps system from the car. take off the four screws which holding the gps screen.
2. Open and remove the circuit board. Next try to resolder all the pins on the circuit board then reassembled. you can do it your self or give the circuit board to a technician to do it for you.

I don't know if it work yet but i will try on my car. Good luck for you and me.

Note: this guy claim that he already fixed 3-4 with 100% successful. You can go to toyota owner club to check it out.

Aug 13, 2012 | 2006 Toyota Highlander

1 Answer

Hi there, My air conditioning and power steering systems are not functioning correctly. The external drive belt is loose. Would I be correct in saying the external drive belt would require tightening to...


Yes you are correct IF you have a single serpentine drive belt that connects your A/C pump, Power steering pump and Alternator to your crankshaft pulley. OR if your A/C and power steering are both connected to the same loose belt.

Nov 28, 2010 | Mitsubishi Lancer Cars & Trucks

1 Answer

What do the service codes P1281 and P0455 mean?


P1281
Engine is Cold Too Long
Engine coolant temperature remains below normal operating temperatures during vehicle travel (Thermostat).
P0455 (M)
Evaporative Emission Control System Leak Detected (large leak)
A large leak has been detected in the evaporative system. See TSB 25-001-02. Also, possible faulty or loose gas cap. Note: The respective Powertrain Diagnostic Procedures Manual will direct the technician to determine if the vehicle evaporative system has an external system leak. Examples of some external system leaks are: a loose gas cap, a disconnected evaporative system hose, or a loose hose connection. Remember that the evaporative system may also have an internal system leak. This internal leak may be caused by an intermittent or permanently stuck open Duty Cycle Purge (DCP) valve. This leak source is considered to be internal because any escaping emissions enter into the engine system and not directly into the atmosphere, unlike an external leak. An internal leak may cause one of the above DTC?s. Possible causes of a stuck open (intermittent or permanent) DCP valve are: 1. Corrosion due to system moisture or possible water intrusion into the system.
P0455 usually a loose/faulty gas cap or cracked or broken hose to the EVAP canister or purge valve.

P1281 The engine coolant temp is too low probably a bad thermostat.

Hope that helps

Oct 12, 2010 | 2003 Jeep Grand Cherokee

2 Answers

I have a 1990 gmc 1500 5 speed that is overheating and leaking coolant i changed the radiator hoses,thermostat, and water pump, and i know the leak is not coming from the radiator what do i do next?


any external leaks?coolant stains? would check the intake for signs of leakage also the heater hose quick connect.also check the sides of the block for leakage from the core plugs.

Jan 02, 2010 | 1990 GMC C1500

2 Answers

I tested a used alternator at the parts store it was putting out good I put it on the car and it isnt doing anything any ideas what the problem could be


A few years back chrysler had the brilliant idea to put the voltage regulator in as part of the computer. Check and see if yours has that system. If you have everything connected properly you know where to look next!! (there is a way of wiring around it but the check engine light will stay on and may not pass inspection)

Jul 10, 2009 | 1992 Dodge Dynasty

1 Answer

Vac code came on 0455


Evaporative Emission Control System Leak Detected (large leak)
A large leak has been detected in the evaporative system. See TSB 25-001-02. Also, possible faulty or loose gas cap. Note: The respective Powertrain Diagnostic Procedures Manual will direct the technician to determine if the vehicle evaporative system has an external system leak. Examples of some external system leaks are: a loose gas cap, a disconnected evaporative system hose, or a loose hose connection. Remember that the evaporative system may also have an internal system leak. This internal leak may be caused by an intermittent or permanently stuck open Duty Cycle Purge (DCP) valve. This leak source is considered to be internal because any escaping emissions enter into the engine system and not directly into the atmosphere, unlike an external leak. An internal leak may cause one of the above DTC?s. Possible causes of a stuck open (intermittent or permanent) DCP valve are: 1. Corrosion due to system moisture or possible water intrusion into the system.

Jun 30, 2009 | 2001 Dodge Stratus

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