HOW TO READ Diagnostic Trouble Codes AND 1ST TRIP Diagnostic Trouble Codes: Notes

DTC and 1st trip DTC can be read by the following methods.

(with CONSULT-II or GST)  CONSULT-II or GST (Generic Scan Tool) Examples: P0705, P0710, P0720, P0725, etc.

These DTCs are prescribed by SAE J2012.

(CONSULT-II also displays the malfunctioning component or system.)

• 1st trip DTC No. is the same as DTC No. 
• Output of the diagnostic trouble code indicates that the indicated circuit has a malfunction. However, in case of the Mode II and GST they do not indicate whether the malfunction is still occurring or occurred in the past and returned to normal. 

  CONSULT-II can identify them as shown below. Therefore, using CONSULT-II (if available) is recommended. 

A sample of CONSULT-II display for DTC and 1st trip DTC is shown. DTC or 1st trip DTC of a malfunction is displayed in SELF DIAGNOSIS mode for "ENGINE" with CONSULT-II. Time data indicates how many times the vehicle was driven after the last detection of a DTC.

Fig 1: Identifying CONSULT-II Select System

Courtesy of NISSAN MOTOR CO., U.S.A.

If the DTC is being detected currently, the time data will be "0".

Fig 2: Identifying CONSULT-II Self Diag Result

Courtesy of NISSAN MOTOR CO., U.S.A.

If a 1st trip DTC is stored in the ECM, the time data will be "1t".

Fig 3: Identifying CONSULT-II Self Diag Result

Courtesy of NISSAN MOTOR CO., U.S.A.