DTC P1450-11: Fuel Tank Pressure Sensor Circuit Short to Ground; DTC P1450-15: Fuel Tank Pressure Sensor Circuit Short to Battery or Open; DTC P1450-2A: Fuel Tank Pressure Sensor Signal Stuck in Range; DTC P1450-2F: Fuel Tank Pressure Sensor Signal Erratic [12/2019 - 10/2022]: Procedure

1. Read the DTCs.

   Powertrain > Engine > Trouble Codes 

2. Read the fuel tank pressure displayed on the GTS.

   Powertrain > Engine > Data List 

   Tester Display
   Vapor Pressure Fuel Tank Sensor

   Result

   Display (DTC Output)	Test Result	Suspected Trouble Area	Proceed to
   P1450-11	Less than -17.1875 kPa (gauge) [-2.4922 psi (gauge)]	Wire harness/connector (fuel tank pressure sensor - ECM) Fuel tank pressure sensor Short in ECM circuit	A
   P1450-15	Higher than 23.9375 kPa (gauge) [3.4709 psi (gauge)]	Wire harness/connector (fuel tank pressure sensor - ECM) Fuel tank pressure sensor Open in ECM circuit	B
   P1450-2A P1450-2F	-	Fuel tank pressure sensor	C

Result: 

B 

See step  4

Result: 

C 

See step  5

Result: 

A 

See step  2

1. Turn the ignition switch off.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Result

   Tester Connection	Condition	Specified Condition	Suspected Trouble Area	Proceed to
   A27-55 (PTNK) - Body ground	Always	Below 10 Ω	Wire harness/connector (fuel tank pressure sensor - ECM) Short in fuel tank pressure sensor circuit	A
   		10 kΩ or higher	Wire harness/connector (fuel tank pressure sensor - ECM) Short in ECM circuit	B

Result: 

B 

See step  7

Result: 

A 

See step  3

1. Disconnect the fuel tank pressure sensor connector.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Result

   Tester Connection	Condition	Specified Condition	Suspected Trouble Area	Proceed to
   A27-55 (PTNK) - Body ground	Always	10 kΩ or higher	Short in fuel tank pressure sensor circuit	A
   		Below 10 Ω	Wire harness/connector (fuel tank pressure sensor - ECM)	B

Result: 

B 

See step  6

Result: 

A 

See step  4

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the fuel tank pressure sensor connector.
2. Turn the ignition switch to ON.
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   r1-3 (VC) - Body ground	Ignition switch ON	4.75 to 5.25 V

4. Turn the ignition switch off.
5. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   r1-1 (E2) - Body ground	Ignition switch off	Below 10 Ω

   Result

   Result	Suspected Trouble Area	Proceed to
   Voltage and resistance within standard ranges	Open in fuel tank pressure sensor circuit	A
   Voltage and resistance outside standard ranges	Open in wire harness/connector (fuel tank pressure sensor - ECM)	B

Result: 

B 

See step  6

Result: 

A 

See step  5

Refer to REMOVAL [12/2019 - 10/2022]

Result

Result: 

NEXT 

See step  8

Result

Result: 

NEXT 

See step  8

Refer to REMOVAL [12/2019 - 10/2022]

Result

Result: 

NEXT 

See step  8

1. Clear the DTCs.

   Powertrain > Engine > Clear DTCs 

2. Turn the ignition switch off and wait for at least 30 seconds.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  9

1. Perform the Evaporative System Check using the GTS, referring to the Confirmation Driving Pattern.
2. Check the DTC judgment result.

   Powertrain > Engine > Utility 

   Tester Display
   All Readiness

   Result

   GTS Display	Description
   NORMAL	DTC judgment completed System normal
   ABNORMAL	DTC judgment completed System abnormal
   INCOMPLETE	DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions

3. Input the DTC: P1450-11, P1450-15, P1450-2A or P1450-2F.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

END