DTC DETECTION LOGIC NOTE： If DTC P1263 or P2263 is displayed with DTC P0237, P0238, P0241 or P0242, first perform the trouble diagnosis for DTC P0237, P0238, P0241 or P0242. Refer to DTC Logic (GT-R certified NISSAN dealer).

DTC No. | Trouble diagnosis name | DTC detecting condition | Possible cause
P2263 | Turbocharger boost system performance (bank 1) | In spite of the boosting area, the boost does not increase. |

- Intake air leaks
- Exhaust gas leaks
- Turbocharger boost sensor
- Turbocharger boost control solenoid valve
- Recirculation valve
- Exhaust manifold and turbocharger assembly

P1263 | Turbocharger boost system performance (bank 2)

DTC CONFIRMATION PROCEDURE
1.PERFORM COMPONENT FUNCTION CHECK
Perform component function check. Refer to Component Function Check (GT-R certified NISSAN dealer).
NOTE：
Use component function check to check the overall function of the turbocharger system circuit. During this check, a 1st trip DTC might not be confirmed.
Is the inspection result normal?
YES>>INSPECTION END
NO>>Go to Diagnosis Procedure (GT-R certified NISSAN dealer).