DTC P14D2-1F: Evaporative Emission System Pressure Sensor/Switch "D" Circuit Intermittent [09/2023 - ]: Procedure

1. Read the DTCs.

   Powertrain > Engine > Trouble Codes 

   Result

   Result	Proceed to
   P14D2-1F and other DTCs are output	A
   P14D2-1F is output	B

   HINT: 

   If any DTCs other than P14D2-1F are output, troubleshoot those DTCs first.

Result: 

A 

GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2023 - ] 

Result: 

B 

See step  2

HINT: 

Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.

Pre-procedure1

• Disconnect the purge pressure sensor connector.
• Turn the ignition switch to ON.

• Measure the voltage according to the value(s) in the table below.

  Standard Voltage

  Tester Connection	Condition	Specified Condition	Result
  C11-3 (VC) - C11-1 (GND)	Ignition switch ON	4.5 to 5.5 V	V
  C11-2 (PRG) - C11-1 (GND)	Ignition switch ON	3.0 to 5.5 V	V

Post-procedure1

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

Pre-procedure2

• None

• Measure the resistance according to the value(s) in the table below.

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  C11-3 (VC) - C11-2 (PRG)	Ignition switch off	171 to 189 kΩ	kΩ
  C11-1 (GND) - Body ground	Always	Below 1 Ω	Ω

  Result

  Proceed to
  OK
  NG

Post-procedure2

• None

Result: 

OK 

REPLACE PURGE PRESSURE SENSOR (VACUUM SENSOR ASSEMBLY). Refer to  REMOVAL [09/2023 - ] 

Result: 

NG 

See step  3

Pre-procedure1

• Disconnect the purge pressure sensor connector.
• Disconnect the ECM connector.

• Measure the resistance according to the value(s) in the table below.

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  C11-3 (VC) - C26-85 (VCPH)	Always	Below 1 Ω	Ω
  C11-2 (PRG) - C26-62 (PHPG)	Always	Below 1 Ω	Ω
  C11-1 (GND) - C26-63 (EPHP)	Always	Below 1 Ω	Ω
  C11-3 (VC) or C26-85 (VCPH) - Body ground and other terminals	Always	10 kΩ or higher	kΩ
  C11-2 (PRG) or C26-62 (PHPG) - Body ground and other terminals	Always	10 kΩ or higher	kΩ

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

OK 

REPLACE ECM. Refer to  REMOVAL [09/2023 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR