DTC Troubleshooting: P0328

ElectronicCircuitSchematics-buttonADInfo-button DTC Advanced Diagnostics: P0328DTC P0328  : Knock Sensor 1 (Bank 1) Circuit High Voltage

Before you troubleshoot, review the general troubleshooting information - Refer to: How to Troubleshoot the Fuel and Emissions Systems or How to Troubleshoot the Brake Booster Pressure Monitoring System .

DTC (PGM-FI)

1. Problem verification

   -1. Turn the vehicle to the ON mode.

   -2. Clear the DTC with the HDS.

   -3. Turn the vehicle to the OFF (LOCK) mode.

   -4. Turn the vehicle to the ON mode.

   -5. Check for Pending or Confirmed DTCs with the HDS.

   DTC Description	Confirmed DTC	Pending DTC
   P0328 Knock Sensor 1 (Bank 1) Circuit High Voltage

   Is DTC P0328 indicated?

   YES 

   The failure is duplicated. Go to step 2.

   NO 

   Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at knock sensor 1 (Bank 1) and the PCM. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot - Refer to: How to Troubleshoot the Fuel and Emissions Systems or How to Troubleshoot the Brake Booster Pressure Monitoring System .

2. Determine possible failure area (knock sensor 1 (Bank 1), others)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Disconnect the following connector.

   Knock sensor 1 (Bank 1) 2P connector

   -3. Turn the vehicle to the ON mode.

   -4. Measure the voltage between test points 1 and 2.

   Test condition	Vehicle ON mode
   	Knock sensor 1 (Bank 1) 2P connector: disconnected
   Test point 1	Knock sensor 1 (Bank 1) 2P connector (female terminals) No. 1:
   Test point 2	Knock sensor 1 (Bank 1) 2P connector (female terminals) No. 2:

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

   Is there about 5.0 V?

   YES 

   Replace knock sensor 1 (Bank 1) .

   NO 

   Go to step 3.

3. Determine possible failure area (KSB1/KS B1 line, others)

   -1. Measure the voltage between test points 1 and 2.

   Test condition	Vehicle ON mode
   	Knock sensor 1 (Bank 1) 2P connector: disconnected
   Test point 1	Knock sensor 1 (Bank 1) 2P connector (female terminals) No. 2:
   Test point 2	Body ground

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

   Is there about 5.0 V?

   YES 

   Go to step 5.

   NO 

   Go to step 4.

4. Open wire check (KSB1/KS B1 line)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Jump the SCS line with the HDS, and wait more than 1 minute.

   -3. Disconnect the following connector.

   PCM connector E (80P)

   -4. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Knock sensor 1 (Bank 1) 2P connector: disconnected
   	PCM connector E (80P): disconnected
   Test point 1	Knock sensor 1 (Bank 1) 2P connector (female terminals) No. 2:
   Test point 2	PCM connector E (80P) No. 52 - Refer to: PCM Connector for Inputs and Outputs or PCM Connector for Inputs and Outputs (2022 2023)

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

   Is there continuity?

   YES 

   The KSB1/KS B1 wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM , then recheck. If DTC P0328 goes away and the PCM was substituted, replace the original PCM .

   NO 

   Repair an open in the KSB1/KS B1 wire between the PCM (E52) and knock sensor 1 (Bank 1).

5. Open wire check (KSSGB1 line)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Jump the SCS line with the HDS, and wait more than 1 minute.

   -3. Disconnect the following connector.

   PCM connector E (80P)

   -4. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Knock sensor 1 (Bank 1) 2P connector: disconnected
   	PCM connector E (80P): disconnected
   Test point 1	Knock sensor 1 (Bank 1) 2P connector (female terminals) No. 1:

   Test point 2

   PCM connector E (80P) No. 51 - Refer to: PCM Connector for Inputs and Outputs or PCM Connector for Inputs and Outputs (2022 2023)

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

   Is there continuity?

   YES 

   The KSSGB1 wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM , then recheck. If DTC P0328 goes away and the PCM was substituted, replace the original PCM .

   NO 

   Repair an open in the KSSGB1 wire between the PCM (E51) and knock sensor 1 (Bank 1).