DTC Description
DTC DETECTION
| DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition |
| P1225 | CTP LEARNING-B1 (CTP LEARNING-B1) | Closed throttle position learning value is excessively low. |
POSSIBLE CAUSE
Electric throttle control actuator (TP sensor 1 and 2)
FAIL-SAFE
Not applicable
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 10 V at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
Is 1st trip DTC detected? YES >> Proceed to EC-400, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
1.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
Is the inspection result normal? YES >> Replace electric throttle control actuator. Refer to EM- 26, "Removal and Installation".
NO >> Remove the foreign matter and clean the electric throttle control actuator inside, then perform throttle valve closed position learning. Refer to EC-140, "Work Procedure".

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CONNECTOR AND TERMINAL PIN KIT
Use the connector and terminal pin kits listed below when
replacing connectors or terminals.
The connector and terminal pin kits contain some of the most
commonly used NISSAN/INFINITI connectors
and terminals. For detailed connector and termin ...
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DTC DETECTION LOGIC
DTC
Display item
Malfunction detected condition
Possible cause
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Valve mechanism
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&nb ...