DTC P0235

DTC P0235  : Turbocharger Boost Sensor Out of Range

NOTE:  Before you troubleshoot, review the general troubleshooting information .

1. Problem verification

   -1. Turn the vehicle to the ON mode.

   -2. Clear the DTC with the HDS.

   -3. Wait 10 seconds or more.

   -4. Check for Pending or Confirmed DTCs with the HDS.

   DTC Description	Confirmed DTC	Pending DTC
   P0235 Turbocharger Boost Sensor Out of Range

   Is DTC P0235 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 the turbocharger boost sensor 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 .

2. Determine possible failure area (P3 line, others)

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

   -2. Disconnect the following connector.

   Turbocharger boost sensor 3P connector

   -3. Turn the vehicle to the ON mode.

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

   Test condition	Vehicle ON mode
   	Turbocharger boost sensor 3P connector: disconnected
   Test point 1	Turbocharger boost sensor 3P connector (female terminals) No. 1:
   Test point 2	Turbocharger boost sensor 3P connector (female terminals) No. 3:

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

   Is there about 5.0 V?

   YES 

   Go to step 6.

   NO 

   Go to step 3.

3. Shorted wire check (VCC2 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
   	Turbocharger boost sensor 3P connector: disconnected
   	PCM connector E (80P): disconnected
   Test point 1	Turbocharger boost sensor 3P connector (female terminals) No. 3:
   Test point 2	Body ground

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

   Is there continuity?

   YES 

   Repair a short in the VCC2 wire between the PCM (E77) and the turbocharger boost sensor.

   NO 

   The VCC2 wire is not shorted. Go to step 4.

4. Open wire check (VCC2 line)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Turbocharger boost sensor 3P connector: disconnected
   	PCM connector E (80P): disconnected
   Test point 1	Turbocharger boost sensor 3P connector (female terminals) No. 3:
   Test point 2	PCM connector E (80P) No. 77

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

   Is there continuity?

   YES 

   The VCC2 wire is OK. Go to step 5.

   NO 

   Repair an open in the VCC2 wire between the PCM (E77) and the turbocharger boost sensor.

5. Open wire check (SG2 line)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Turbocharger boost sensor 3P connector: disconnected
   	PCM connector E (80P): disconnected
   Test point 1	Turbocharger boost sensor 3P connector (female terminals) No. 1:
   Test point 2	PCM connector E (80P) No. 78

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

   Is there continuity?

   YES 

   The SG2 wire is OK. Go to step 8.

   NO 

   Repair an open in the SG2 wire between the PCM (E78) and the turbocharger boost sensor.

6. Shorted wire check (P3 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
   	Turbocharger boost sensor 3P connector: disconnected
   	PCM connector E (80P): disconnected
   Test point 1	Turbocharger boost sensor 3P connector (female terminals) No. 2:
   Test point 2	Body ground

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

   Is there continuity?

   YES 

   Repair a short in the P3 wire between the PCM (E57) and the turbocharger boost sensor.

   NO 

   The P3 wire is not shorted. Go to step 7.

7. Open wire check (P3 line)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Turbocharger boost sensor 3P connector: disconnected
   	PCM connector E (80P): disconnected
   Test point 1	Turbocharger boost sensor 3P connector (female terminals) No. 2:
   Test point 2	PCM connector E (80P) No. 57

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

   Is there continuity?

   YES 

   The P3 wire is OK. Go to step 8.

   NO 

   Repair an open in the P3 wire between the PCM (E57) and the turbocharger boost sensor.

8. Turbocharger boost sensor check

   -1. Substitute a known-good turbocharger boost sensor .

   -2. Reconnect all connectors.

   -3. Exit the SCS mode with the HDS.

   -4. Turn the vehicle to the ON mode.

   -5. Clear the DTC with the HDS.

   -6. Wait 10 seconds or more.

   -7. Check for Pending or Confirmed DTCs with the HDS.

   DTC Description	Confirmed DTC	Pending DTC
   P0235 Turbocharger Boost Sensor Out of Range

   Is DTC P0235 indicated?

   YES 

   The turbocharger boost sensor 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 P0235 goes away and the PCM was substituted, replace the original PCM .

   NO 

   Replace the original turbocharger boost sensor .