GSIC - Global Service Information Center

### DTC P0168/39 Fuel Temperature Too High

## for Preparation Click here

## DESCRIPTION

Refer to DTC P0180/39 on page Click here.

DTC No. | DTC Detection Condition | Trouble Area

P0168/39

If fuel temperature is between 35°C (95°F) and 60°C (140°F) at engine start, and conditions 1 and 2 are met:
(1 trip detection logic)

1. Vehicle is driven at varying speeds (under acceleration and deceleration)
2. Fuel temperature remains within 3°C (5.4°F) of engine starting temperature

Fuel temperature sensor

P0168/39

If fuel temperature was more than 60°C (140°F) at engine start, and conditions 1 and 2 are met:
(1 trip detection logic)

1. Vehicle is driven at varying speeds (under acceleration and deceleration)
2. Fuel temperature remains within 1°C (1.8°F) of engine starting temperature, and this is successively recorded 6 times

Fuel temperature sensor

## INSPECTION PROCEDURE

HINT:

1. If DTCs P0180/39, P0182/39 or P0183/39 is set simultaneously with P0168/39, the fuel temperature sensor may have an open or a short circuit. Troubleshoot those DTCs first.
2. Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, and other data from the time the malfunction occurred.

1.CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P01683/39)

1. Connect the intelligent tester to the DLC3.

1. Turn the ignition switch ON and turn the intelligent tester ON.

1. Enter the following menus: Powertrain / Engine / DTC.

1. Read the DTCs.

   Result:

     Display (DTC Output) | Proceed to
     P0168/39 | A
     P0168/39 and other DTCs | B

   HINT:
     If any DTCs other than P0168/39 are output, perform the troubleshooting for those codes first.

| B |

GO TO RELEVANT DTC CHART

A |

REPLACE FUEL TEMPERATURE SENSOR