DTC DETECTION LOGIC

NOTE:
If DTC P0236 or P0240 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Refer to DTC Logic (GT-R certified NISSAN dealer).

DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0236
Turbocharger boost sensor circuit range/performance (bank 1)
A
In spite of the low boost, the signal voltage of the turbocharger boost sensor to the ECM is too high.
  • Harness or connectors
    (The sensor circuit is shorted.)
  • Turbocharger boost sensor
  • Boost control actuator stuck closed
B
In spite of the high boost, the signal voltage of the turbocharger boost sensor to the ECM is too low.
  • Harness or connectors
    (The sensor circuit is open.)
  • Intake air leaks
  • Exhaust gas leaks
  • Recirculation valve
  • Exhaust manifold and Turbocharger assembly
  • Turbocharger boost sensor
  • Boost control actuator
P0240
Turbocharger boost sensor circuit range/performance (bank 2)
A
In spite of the low boost, the signal voltage of the turbocharger boost sensor to the ECM is too high.
  • Harness or connectors
    (The sensor circuit is shorted.)
  • Turbocharger boost sensor
  • Boost control actuator stuck closed
B
In spite of the high boost, the signal voltage of the turbocharger boost sensor to the ECM is too low.
  • Harness or connectors
    (The sensor circuit is open.)
  • Intake air leaks
  • Exhaust gas leaks
  • Recirculation valve
  • Exhaust manifold and Turbocharger assembly
  • Turbocharger boost sensor
  • Boost control actuator

 
 DTC CONFIRMATION PROCEDURE

 
 1.PRECONDITIONING
 
 2.PERFORM DTC CONFIRMATION PROCEDURE
 
 3.PERFORM COMPONENT FUNCTION CHECK