Question about 1997 Toyota T100

2 Answers

Toyota T100 OBDII Code P0450 - Pressure Sensor Malfunction

So, I need to get this fixed on the cheap...I can do the work, but I can't diagnose the problem. Do I need to replace the charcoal canister? Anyone out there run into this code and have it fixed? Any ideas on what the problem could be before I go and by expensive parts.

Posted by on


2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Toyota Master
  • 1,861 Answers

P0450 deals with the Vapor Pressure Sensor, in the fuel tank vapor circuit. Buying a charcoal canister would not cure this.
Go to a Toyota dealer and tell the parts guy that you want a
Vapor Pressure Sensor.
It is on the vapor line, before the charcoal canister.

After you replace the sensor, remove the EFI fuse to clear the code.

I hope that this answers your question.

Please rate my assistance level with a FixYa rating
(4 blue diamonds)

Posted on Feb 10, 2009

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

A garage checked my "ON check engine light". They replaced the EGR and EGR solenoid. These parts are side by side on a 2001 Toyota Camry. They said they also cleaned the injectors,intake manifold, and fuel lines. $600 dollars later and two days the light came back on. The auto zone said the light was reading EGR again. When the same garage went to slap a sticker on the car for inspection they said a different code showed of P0401...any thoughts what next to check? Thank you

Posted on Mar 28, 2010


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Where would i find the sensor for code p0450

P0450 - Evaporative Emission Control System Pressure Sensor Malfunction. Gas tank.

Mar 24, 2015 | 2001 Hyundai Santa Fe

2 Answers

I scanned and got a code p0450 is that electrical

P0450 Hyundai - EVAP Emission System Pressure Sensor

Mar 24, 2015 | 2001 Hyundai Santa Fe

1 Answer

Code po450

Error Code: P0450
Evaporative Emission (EVAP) Pressure Sensor - Circuit Malfunction
Possible Cause:
Evaporative emission (EVAP) pressure sensor.
Engine control module (ECM).

Dec 07, 2013 | Mercedes-Benz C230 Cars & Trucks

1 Answer

Please GeoffW1 this are the fualt code diagnose from my toyota camry 1999 model v6 engine FAULT NUMBERS- 1.( p0110 ) 2.( p0135) 3.(p0450) 4.( p1410) 5.(P1411) please i need their locations and...

Sorry, I never noticed this post, for some reason I did not get an email from Fixya. If it is not too late..........
p0110 is the Intake Air Temp sensor or its wiring connector at fault. This is located at the side of the air cleaner housing.
p0135 is a fault in the No 1 oxygen sensor in bank 1, or its wiring connector. This thing is located in the exhaust manifold under the sheet metal shield at the front of the engine
p0450 is an evaporative emission system pressure sensor fault. Many people recommend replacing the fuel filler cap gasket before going further with this one

p1410 and p1411 indicate an EGR valve malfunction, and it may be enough to simply clean and check it, located on the engine next to the firewall. Also check the vacuum modulator and Vacuum Switch Valve, as shown here p46, 146, 152, 190

Nov 15, 2012 | 1999 Toyota Camry

1 Answer

Have a code P0450

P0450 Evaporative Emission Control System Pressure Sensor Malfunction

replace sensor

Jun 16, 2010 | 1998 Toyota Camry

1 Answer


The vapor pressure sensor, VSV for canister closed valve (CCV), VSV for pressure switching valve are used
to detect abnormalities in the evaporative emission control system.
The ECM decides whether there is an abnormality in the evaporative emission control system by the vapor
pressure sensor signal.
DTCs P0441 and P0446 are recorded by the ECM when evaporative emissions leak from the components
when there is a malfunction anywhere in the VSV for EVAP, the VSV
for pressure switching valve, or in the vapor pressure sensor itself.

checked basic , gas cap.

More than likely you need to take to a garage , rec. dealership
will have to perform a smoke check to see if there is a leak somewhere or wether there is a malfunction with a vac. solinoid valve(vsv)

Apr 17, 2010 | 2001 Toyota Camry Solara

1 Answer

P0450 CODE ON 1997 T100 V6 PICKUP. WHAT IS it and how can I fix it?

Good day
P0450 is Evaporate emission system pressure sensor/switch
the cause could be
1. short or open in the vapor pressure sensor circuit
2.vapour pressure sensor
3. ECM

You can test with the following
you can access the ECM behind the glove box. turn ignition on,backprobe the ECM connector, on A/T models, measure voltage between terminals #1 (green/black wire) and #22 (brown/black wire) at the ECM E6 connector. on M/T models measure the voltage between terminals #1 (green/black wire) and #9 (brown/black wire) at ECM E6. if voltage is 4.5 - 5.5 volts, go to the next step. If the voltage is not 4.5 - 5.5 volts, replace ECM and retest.
2. back-probe ECM connector on A/T models measure voltage between terminals #15 (red/blue wire) and #22 (brown/black wire) at ECM E6. on M/T models measure voltage between terminals #4 (red/blue wire) at ECM E5 and connector #9 (brown/black wire) at ECM E6 connector. on all models disconnect the vacuum hose from the vapor pressure sensor. sensor is located near the brake master cylinder. connect a vacuum pump to sensor. if voltage is 2.9-3.7 volts without vacuum applied and 1.3-2.1 volts with .59 in.Hg (2kpa) vacuum applied. replace ECM and retest if voltage is not as specified go to next step.
3. check for open r short circuit in the wiring harness between vapor pressure sensor and ECM. repair wiring as necessary. if wiring harness is okay replace the vapor pressure sensor.

Hope this helps


Jul 13, 2009 | 1997 Toyota T100

2 Answers

P0450 trouble code

Your vehicle has whats called a OBDII diagnostics setup. Just google "2001 Toyota Tacoma, OBDII trouble codes". You should get a whole page full of responses. (Type in exactly what is in exclamation marks above) Once you have codes, scroll down to PO450. Remember, whatever sensor/circuit it refers to, means there is a problem with the circuit, the sensor, ie..wiring, bad connector, bad ground, short, open, and so on. Dont just change out part without first examining the wiring and connectors first. Common sense goes a long way with this sort of troubleshooting.


Apr 19, 2009 | 2001 Toyota Tacoma

Not finding what you are looking for?
1997 Toyota T100 Logo

3,751 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toyota Experts


Level 3 Expert

76846 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22246 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8557 Answers

Are you a Toyota Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides