Nissan Sentra manuals

Nissan Sentra Service Manual: Diagnosis description : permanent diagnostic trouble code (permanent DTC)

Nissan Sentra Service Manual / Engine / Engine control system / Operation / Diagnosis description : permanent diagnostic trouble code (permanent DTC)

Permanent DTC is defined in SAE J1979/ISO 15031-5 Service $0A.

ECM stores a DTC issuing a command of turning on MIL as a permanent DTC and keeps storing the DTC as a permanent DTC until ECM judges that there is no presence of malfunction.

Permanent DTCs cannot be erased by using the erase function of CONSULT or Generic Scan Tool (GST) and by disconnecting the battery to shut off power to ECM. This prevents a vehicle from passing the in-use inspection without repairing a malfunctioning part.

When not passing the in-use inspection due to more than one permanent DTC, permanent DTCs should be erased, referring to this manual.

NOTE:

PERMANENT DTC SET TIMING

The setting timing of permanent DTC is stored in ECM with the lighting of MIL when a DTC is confirmed.

Diagnosis description : system readiness test (SRT) code
System Readiness Test (SRT) code is specified in Service $01 of SAE J1979/ISO 15031-5. As part of an enhanced emissions test for Inspection & Maintenance (I/M), certain states require the s ...

Diagnosis description : malfunction indicator lamp (MIL)
When emission-related ECU detects a malfunction in the emission control systems components and/or the powertrain control components (which affect vehicle emissions), it turns on/blinks MIL to infor ...

Other materials:

Periodic maintenance
CVT FLUID Inspection FLUID LEAKAGE Check transaxle surrounding area (oil seal and plug etc.) for fluid leakage. If anything is found, repair or replace damaged parts and adjust CVT fluid level. Refer to TM-251, "Adjustment". Replacement CVT fluid : Refer to TM-288, & ...

1144 Incomplete steering angle sensor adjustment
DTC Logic Dtc detection logic Dtc Display item Malfunction detected condition Possible causes C1144 St ang sen signal When neutral position adjustment of steering angle sensor is not complete. Harness or connector Steering angle sensor Abs actu ...

P2138 APP Sensor
DTC Logic DTC DETECTION LOGIC NOTE: If DTC P2138 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to EC-353, "DTC Logic". DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition Possible cause ...

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