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 etc. These DTC 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, CONSULT-II (if available) is recommended. 

A sample of CONSULT-II display for DTC and 1st trip DTC is shown in FREEZE FRAME DATA AND 1ST TRIP FREEZE FRAME DATA . DTC or 1st trip DTC of a malfunction is displayed in SELF-DIAGNOSTIC RESULTS 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: CONSULT-II Display - 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: CONSULT-II Display - DTC RESULTS

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: CONSULT-II Display - DTC RESULTS (1t)

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