DTC P1458: Inspection

FTP Sensor Functional Inspection 

Test Procedure 

• Preparation
  • FTP sensor: removed
  • FTP sensor vent hose: disconnected

• Procedure
  • Connect the connector (3P) to the FTP sensor.
  • Turn the vehicle to the ON mode.
  • Confirm the HDS [FTP Sensor (Fine)].

Courtesy of HONDA, U.S.A., INC.

• Normal Conditions
  • HDS [FTP Sensor (Fine)] does not vary 0.067 kPa (0.5 mmHg, 0.02 inHg) or more  within 3 seconds.

Results 

• If it is abnormal, there is a problem with the FTP sensor.

FTP Sensor Port Visual Inspection 

Test Procedure 

• Preparation
  • FTP sensor: removed
  • FTP sensor vent hose: disconnected

• Procedure
  • Check for a blockage or damage at the FTP sensor ports. (EVAP canister side and vent side)

Courtesy of HONDA, U.S.A., INC.

• Normal Conditions
  • There is no blockages or damages.

Results 

• If it is abnormal, there is a problem with the FTP sensor.

FTP Sensor Vent Hose Inspection (Blockage) 

Test Procedure 

• Preparation
  • FTP sensor vent hose: disconnected
• Procedure
  • Check the FTP sensor vent hose (A) for blockage or restriction.

Courtesy of HONDA, U.S.A., INC.

• Normal Conditions
  • There is no blockage or restriction.

Results 

• If it is abnormal, there is a problem with the FTP sensor vent hose.

EVAP Canister Drain System Inspection (Blockage) 

Test Procedure 

• Procedure
  • Disconnect the drain tube (A) from the EVAP canister (B), then connect the vacuum pump/gauge, 0-30 inHg (C) to the hose as shown.
  • Apply pressure to the hose.

Courtesy of HONDA, U.S.A., INC.

• Normal Conditions
  • Pressure is not held.

Results 

• If it is abnormal, there is a problem with the EVAP canister drain system.

EVAP Canister Vent Shut Valve Functional Inspection (Close Stuck) 

Test Procedure 

• Preparation
  • EVAP canister vent shut valve: removed

• Procedure
  • Connect the connector (2P) to the EVAP canister vent shut valve.
  • Turn the vehicle to the ON mode.
  • Select the HDS [CVS ON].
  • Check the EVAP canister vent shut valve (A) operation.

Courtesy of HONDA, U.S.A., INC.

• Normal Conditions
  • The EVAP canister vent shut valve is free of corrosion and operates properly.

Results 

• If it is abnormal, there is a problem with the EVAP canister vent shut valve.

EVAP Canister Inspection 

Test Procedure 

• If the other inspection item(s) indicated a normal condition, then it is determined that the remaining EVAP canister is the cause.

Results 

• There is a problem with the EVAP canister.