There are 7 owner-reported fuel system complaints for the 2001 Toyota Siennain NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
MY 9 YEAR OLD SON AND I WERE ON OUR WAY HOME FROM WORK LAST NIGHT AND I HEARD SOMETHING SNAP ON MY 2001 TOYOTA SIENNA. I THEN HEARD SOMETHING DRAGGING SO I IMMEDIATELY PULLED OVER TO CHECK AND REALIZED THE FUEL TANK WAS DRAGGING AND THE BACK STRAPS HOLDING THE GAS TANK UP HAD BROKEN LOOSE CAUSING THE BACK SECTION OF THE TANK TO DRAG ON THE ROAD. I HAD TO CALL A TOW TRUCK TO TOW VEHICLE TO THE MECHANICS. SINCE I WORK 18 MILES AWAY I FIND GETTING TO WORK DIFFICULT.
TL* THE CONTACT OWNS A 2001 TOYOTA SIENNA. THE CONTACT STATED THAT THE VEHICLE EMITTED A STRONG GASOLINE FUEL ODOR WHILE DRIVING. THE VEHICLE WAS TAKEN TO THE DEALER FOR INSPECTION WHERE THE CONTACT WAS ADVISED THAT THE ODOR WAS DUE TO A FAULTY FUEL CANISTER AND CAP. THE DEALER REPLACED THE FUEL CANISTER AND CAP BUT THE FAILURE WAS NOT CORRECTED. THE VEHICLE WAS TAKEN BACK TO THE DEALER WHERE THE FAILURE WAS LOCATED AT THE FUEL PIPE ASSEMBLY LINES. THE FUEL PIPE ASSEMBLY LINES WERE REPLACED TWICE TO CORRECT THE FAILURE. THE MANUFACTURER DENIED ASSISTANCE WITH THE REPAIR, DUE THE VEHICLE MILEAGE. THE FAILURE MILEAGE WAS 102,542 AND THE CURRENT MILEAGE WAS 103,515.
TL*THE CONTACT OWNS A 2001 TOYOTA SIENNA. WHEN THE CONTACT ATTEMPTS TO ADD FUEL TO THE VEHICLE, THE GAS PUMP WOULD CLICK AS IF THE TANK WAS FULL. HOWEVER, THE VEHICLE'S FUEL GAUGE INDICATED THAT THE TANK WAS EMPTY. THE CONTACT TOOK THE VEHICLE TO THE DEALER AND THEY CHANGED THE CHARCOAL FILTER. THE FAILURE CONTINUED. THE CONTACT TOOK THE VEHICLE TO AN INDEPENDENT REPAIR SHOP WHO WAS ABLE TO REPAIR THE FAILURE. THE SHOP REPLACED THE FUEL ROLLOVER VALVE. THE CONTACT STATED THAT SIX MONTHS LATER, THE FAILURE RECURRED. THE CURRENT AND FAILURE MILEAGES WERE 61,000.
DT: THE CONTACT OWNS A 2001 TOYOTA SIENNA. THE FUEL AIR SENSOR FAILED. ALSO, FUEL SENSOR FAILED IN CONTACT'S SON'S 2001 TOYOTA HIGHLANDER WHICH HAD THE SAME MILEAGE. CALLED TOYOTA, AND THEY SAID THERE WERE NO RECALLS . HAD BOTH PARTS REPLACED, $282.00 EACH. NOW THE IGNITION HAS FAILED. *AK *NM
I FLLLED THE FUEL TANK ON 26 NOV 2003, AND DROVE THE VEHICLE 13 MILES. IT REMAINED PARKED IN THE DRIVEWAY, WHICH SLOPES TOWARD THE REAR AT ABOUT 20 DEGREES, UNTIL 28 NOV 2003 AT 12:30 PM. THERE WAS AT THAT TIME RAW GASOLINE DRIPPING IN TEASPOON TO TABLESPOON QUANTITIES FROM A LINE IN FRONT OF THE FUEL TANK TO THE DRIVEWAY, WITH A PUDDLE ABOUT 18 BY 28 INCHES. I DROVE THE VEHICLE ABOUT 1 MILE WITH THE ENGINE RUNNING SMOOTHLY, AFTER WHICH FOR ABOUT 4 MILES THE ENGINE HESITATED AND SURGED AT SPEEDS OVER 35 MPH. THE REMAINDER OF THE 10 MILE TRIP, THE ENGINE RAN SMOOTHLY AGAIN. LATER THAT DAY, THE SERVICE REP CALLED TO TELL ME THEY HAD COMPLETED DIAGNOSTIC TESTING WHICH SHOWED A DEFECTIVE CHARCOAL CANISTER, WHICH NEEDED TO BE REPLACED FOR $552.76, AT 62,612 MILES. THE REPAIR REPORT STATES THAT THE CHARCOAL CANISTER WAS SATURATED WITH RAW FUEL. THIS IS AN OBVIOUS SAFETY HAZARD.*AK
FUEL INJECTORS FAIL INTERMITTENTLY. *AK
ELECTRICAL SYSTEM CONTAINING FUEL INJECTOR RELAY FAILED. FUEL INJECTOR STOPPED WORKING AND CAR LOST POWER ON HIGHWAY. REPLACING RELAY AND FUSE BY DEALERSHIP DID NOT FIX PROBLEM, ENDED UP FAILING AGAIN AFTER BEING RETURNED FROM DEALERSHIP. *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.
Data synced from NHTSA on Apr 26, 2026