DTC P0325-11: Knock Sensor 1 Bank 1 or Single Sensor Circuit Short to Ground [03/2023 - ]: Procedure
WARNING: This page is about a different car, the 2025 Lexus NX 350h, 2024 Lexus NX 350h, 2023 Lexus NX 350h, and 2022 Lexus NX 350h. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK TERMINAL VOLTAGE (POWER SOURCE OF KNOCK CONTROL SENSOR)
- Disconnect the knock control 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 V2-2 (KNK1) - V2-1 (EKNK) Ignition switch ON 4.5 to 5.5 V Result
Proceed to OK NG
Result:
NG
See step 3
Result:
OK
See step 2
- INSPECT KNOCK CONTROL SENSOR
Refer to INSPECTION [11/2021 - ]
HINT:
Perform "Inspection After Repair" after replacing the knock control sensor.
Refer to INITIALIZATION [11/2021 - ]
Result
Proceed to OK NG Result:
OK
See step 4
Result:
NG
REPLACE KNOCK CONTROL SENSOR. Refer to REMOVAL [11/2021 - ]
- 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 V2-2 (KNK1) or B92-111 (KNK1) - Body ground Always 10 kΩ or higher Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
See step 4
- CLEAR DTC
- Clear the DTCs.
Powertrain > Engine > Clear DTCs
- Turn the ignition switch off and wait for at least 30 seconds.
Result
Proceed to NEXT
Result:
NEXT
See step 5
- Clear the DTCs.
- CHECK WHETHER DTC OUTPUT RECURS (DTC P0325-11)
- Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
- Read the DTCs.
Powertrain > Engine > Trouble Codes
Result
Result Proceed to DTCs are not output A DTC P0325-11 is output B
Result:
A
CHECK FOR INTERMITTENT PROBLEMS. Refer to CHECK FOR INTERMITTENT PROBLEMS [11/2021 - ]
Result:
B
REPLACE ECM. Refer to REMOVAL [11/2021 - ]