DTC P0325-11: Knock Sensor 1 Bank 1 or Single Sensor Circuit Short to Ground [10/2018 - ]: Procedure

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus UX 250h, 2023 Lexus UX 250h, 2022 Lexus UX 250h, 2021 Lexus UX 250h, and 2020 Lexus UX 250h. However, it is still accessible from the selected car via links, so may be relevant.

CHECK TERMINAL VOLTAGE (POWER SOURCE OF KNOCK CONTROL SENSOR)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Front view of wire harness connector (to Knock Control Sensor)

Disconnect the knock control sensor connector.
Turn the power switch on (IG).

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

Standard Voltage

Tester Connection	Condition	Specified Condition
a1-2 (KNK1) - a1-1 (EKNK)	Power switch on (IG)	4.5 to 5.5 V

Result

Proceed to
OK
NG

Result:

See step 3

Result:

See step 2

INSPECT KNOCK CONTROL SENSOR

Inspect the knock control sensor.

Refer to INSPECTION [10/2018 - ]

HINT:

Perform "Inspection After Repair" after replacing the knock control sensor.

Refer to INITIALIZATION [10/2018 - 08/2021] Refer to INITIALIZATION [08/2021 - ]

Result

Proceed to
OK
NG

Result:

See step 4

Result:

REPLACE KNOCK CONTROL SENSOR. Refer to REMOVAL [10/2018 - ]

CHECK HARNESS AND CONNECTOR (KNOCK CONTROL SENSOR - ECM)

Disconnect the knock control 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
a1-2 (KNK1) or C34-111 (KNK1) - Body ground	Always	10 kΩ or higher

Result

Proceed to
OK
NG

Result:

REPAIR OR REPLACE HARNESS OR CONNECTOR

Result:

See step 4

CLEAR DTC

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.
Clear the DTCs.
Powertrain > Engine > Clear DTCs

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

Result

Proceed to
NEXT

Result:

See step 5

CHECK WHETHER DTC OUTPUT RECURS (DTC P032511)

Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
Enter the following menus: Powertrain / Engine / Trouble Codes.

Read the DTCs.

Powertrain > Engine > Trouble Codes

Result

Result	Proceed to
DTCs are not output	A
DTC P032511 is output	B

Result:

CHECK FOR INTERMITTENT PROBLEMS. Refer to CHECK FOR INTERMITTENT PROBLEMS [10/2018 - ]

Result:

REPLACE ECM. Refer to REMOVAL [10/2018 - 07/2022] Refer to REMOVAL [07/2022 - ]