A month ago I got a P0453 code on my 2006 Toyota Landcruiser.
First thing I did was replace the gas cap with an OEM cap.
P0453 still present.
Then I replaced the charcoal canister with OEM.
P0453 still present.
Truck runs great and has no issues other than all the check engine lights lit up on the dash.
I have to get emissions checked this year, so need to figure this out soon.
There is very little information out there on the P0453 code.
It appears that in prior model years the vapor pressure sensor is located on top of the fuel tank.
That is what my FSM (factory service manual) for a 2004 shows:
Unfortunately I don't have a FSM for a 2006 LC.
However for 2006 Toyota changed the design and the vapor pressure sensor is no longer on top of the fuel tank.
I even yanked out the rear seats and pulled the carpet to check, and yep - no vapor pressure sensor on top of the tank:
The diagnostic instructions in the FSM say:
P0452 and P0453
"The ECM sensor pressure in the fuel tank using the vapor pressure sensor. The ECM supplies the sensor
with a regulated 5 V reference voltage and the sensor returns a signal voltage between 0.5 V and 4.5 V according
to the pressure level in the fuel tank.
If the output voltage of the vapor pressure sensor is out of normal range, the ECM will determine that there
is a malfunction in the sensor or sensor circuit.
When pressure indicated by the vapor pressure sensor deviates below -3.999 kPa (-30 mmHg, -1.18 in.Hg)
or above 1.999 kPa (15 mmHg, 0.59 in.Hg), the ECM interprets this as a malfunction in the vapor pressure
sensor. The ECM will turn on the MIL and a DTC will be set."
-----
I think I need to find either the sensor to see if its defective or the sensor wires to see if they are damaged.
Anyone know where the vapor pressure sensor might be located on a later model Land Cruiser?
Or how they might have fixed the P0453 code on a later model LC?
Thanks in advance!!
First thing I did was replace the gas cap with an OEM cap.
P0453 still present.
Then I replaced the charcoal canister with OEM.
P0453 still present.
Truck runs great and has no issues other than all the check engine lights lit up on the dash.
I have to get emissions checked this year, so need to figure this out soon.
There is very little information out there on the P0453 code.
It appears that in prior model years the vapor pressure sensor is located on top of the fuel tank.
That is what my FSM (factory service manual) for a 2004 shows:
Unfortunately I don't have a FSM for a 2006 LC.
However for 2006 Toyota changed the design and the vapor pressure sensor is no longer on top of the fuel tank.
I even yanked out the rear seats and pulled the carpet to check, and yep - no vapor pressure sensor on top of the tank:
The diagnostic instructions in the FSM say:
P0452 and P0453
"The ECM sensor pressure in the fuel tank using the vapor pressure sensor. The ECM supplies the sensor
with a regulated 5 V reference voltage and the sensor returns a signal voltage between 0.5 V and 4.5 V according
to the pressure level in the fuel tank.
If the output voltage of the vapor pressure sensor is out of normal range, the ECM will determine that there
is a malfunction in the sensor or sensor circuit.
When pressure indicated by the vapor pressure sensor deviates below -3.999 kPa (-30 mmHg, -1.18 in.Hg)
or above 1.999 kPa (15 mmHg, 0.59 in.Hg), the ECM interprets this as a malfunction in the vapor pressure
sensor. The ECM will turn on the MIL and a DTC will be set."
-----
I think I need to find either the sensor to see if its defective or the sensor wires to see if they are damaged.
Anyone know where the vapor pressure sensor might be located on a later model Land Cruiser?
Or how they might have fixed the P0453 code on a later model LC?
Thanks in advance!!
