There are 3 stored owner reports matching the electrical system leading-label group for the 2003 Nissan Frontier in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 3 of 3 matching reports.
Open the full vehicle complaint log (all categories)WHILE DRIVING, THE ENGINE SERVICE LIGHT STARTED FLASHING, INDICATING AN ENGINE FIRE. *AK THE FIREMAN INFORMED THE CONSUMER THE FIRE WAS LIKELY CAUSED BY AN ELECTRICAL SHORT UNDER THE HOOD. *LA *JB
I PURCHASED A 2003 NISSAN FRONTIER PICKUP TRUCK. WHEN I USE THE DEFROSTER THE AIR CONDITIONER COMES ON WHICH IS NORMAL. I CANNOT TURN OFF THE DEFROSTER AND AIR CONDITIONER UNTIL I TURN OFF THE ENGINE. THE AIR CONDITIONER COMPRESSOR STAYS ON UNTIL THE ENGINE IS SHUT DOWN. IF I AM ON A HIGHWAY I HAVE TO STOP AND TURN THE ENGINE OFF TO TURN THE AIR CONDITIONER OFF, RESTART THE ENGINE, AND THEN MERGE BACK ON THE HIGHWAY. AT ONE NISSAN DEALERSHIP THE SERVICE DEPARTMENT TELLS ME THIS IS NORMAL AND IT IS WRITTEN UP THAT WAY IN THE MANUAL. YET THEY TELL ME THERE IS A NATIONWIDE BACKORDER FOR A PART. ANOTHER NISSAN DEALERSHIP TELLS ME THERE IS A PROBLEM BUT THEY ARE UNABLE TO DIAGNOSE WITHOUT TEARING EVERYTHING APART.
WHEN IGNITION IS TURNED OFF POWER DOOR LOCKS RANDOMLY LOCK VEHICLE BY THEMSELVES, LOCKING OUT DRIVER. HAPPENS ONCE EVERY ONE OR TWO WEEKS.*AK
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.