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2008 Mercury Mariner Hybrid

Owner reports · Recalls · Investigations

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What owners reported most

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When problems were reported

Mileage at the reported incident

107 reports with mileage · 9 unknown

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Service Brakes. Review the 29 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine. Review the 28 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Steering. Review the 24 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

2 crash reports0 fire reports0 injury reports

Engine complaints

28 reports
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96,000 miles · Aug 7, 2014
EngineFuel/propulsion SystemVehicle Speed Control

ENGINE SHUTS OFF AND DISPLAY SAYS TO PULL OFF ROAD. THIS HAS BEEN A ON GOING PROBLEM. THE DEALER REPLACED THE THROTTLE BODY AND IT STILL HAPPENS. IT IS VERY UNSAFE TO LOSE YOUR VEHICLE'S ACCELERATION AND HAVE THE ENGINE TURN OFF. I THINK IT MAY BE A COMPUTER CODE GLITCH BECAUSE BASED ON WHAT I WAS TOLD BY THE DEALER THE ENGINE …

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ENGINE SHUTS OFF AND DISPLAY SAYS TO PULL OFF ROAD. THIS HAS BEEN A ON GOING PROBLEM. THE DEALER REPLACED THE THROTTLE BODY AND IT STILL HAPPENS. IT IS VERY UNSAFE TO LOSE YOUR VEHICLE'S ACCELERATION AND HAVE THE ENGINE TURN OFF. I THINK IT MAY BE A COMPUTER CODE GLITCH BECAUSE BASED ON WHAT I WAS TOLD BY THE DEALER THE ENGINE SHUTS OFF BECAUSE A FUEL MIXTURE ISSUE DETECT THAT MAY EVEN BE A FALSE READING. THIS AUTOMATED ACTION WITHIN THE VEHICLE BRAIN DECISION PUTS MANY AT RISK AS I FOUND OUT WHEN I WAS IN THE FURTHEST LEFT LANE ABOUT A MILE BEFORE THE 55 FREEWAY TURN OFF WHILE TRAVELING SOUTH ON THE 91 FREEWAY WITH THE CAR SHUT OFF IT'S ENGINE. I LOST POWER AND NEEDED TO PULL OVER WHILE A CAR BEHIND ME WAS FLASHING THEIR HEADLIGHTS AND THE CAR TO MY RIGHT WAS SLOWLY PASSING ME UP. NEXT CAME A BIGGER CHALLENGE SINCE THERE WERE 2 BIG RIGS ON THE ROAD AND I HIT THE BRAKES A LITTLE WHILE SIGNALLING A LANE CHANGE WITH MY FLASHERS ON I MANAGED TO SQUEEZE BETWEEN THE TWO RIGS AND ALMOST CAUSED THE ONE BEHIND ME TO REAR END ME. THE BIG RIG IN TURN CAUSED THE CAR BEHIND TO BREAK AND THIS ALMOST LEAD TO A PILE UP. THAT INTERSECTION ON THE FREEWAY WHERE THE 55 FREEWAY BEGINS ON YOUR LEFT LANES AND THE 91 FREEWAYS CONTINUES ON THE RIGHT IS A VERY DANGEROUS PLACE TO HAVE TO NEGOTIATE A PULL OVER. IT IS COMPOUNDED WITH A ENTRY RAMP WITH CARS TRYING TO QUICKLY GET INTO THE LEFT 2 LANES IN ORDER TO GET ONTO THE 55 FREEWAY. I DO NOT SEE A REASON TO HAVE YOUR VEHICLE TURN ITSELF OF FOR ANY REASON OTHER THAN A FIRE OR A VERY SERIOUS SAFELY ISSUE. BASED ON WHAT I KNOW THE COMPUTER OF MY VEHICLE PUTS PEOPLE IN DANGER OVER A POSSIBLE ISSUE WITH THE SMOG POLLUTION BEING TOO EXCESSIVE FOR THE MOMENT. *TR

NHTSA ODI #10620663

95,000 miles · Aug 7, 2014
EngineFuel/propulsion SystemVehicle Speed Control

WHILE DRIVING THE VEHICLE SHUTS OFF WITH A RED TRIANGLE AND THE DISPLAY SAYS TO PULL OFF SAFELY. THIS HAS HAPPENED ABOUT 6 TIMES ALREADY. I HAVE TAKEN IT BACK TO THE FORD DEALER AND THEY REPLACED THE THROTTLE BODY BECAUSE THERE IS A SENSOR THAT FAILS IN THE UNIT AND THEY EXPLAINED THE FACTORY CALIBRATES THE WHOLE UNIT WITH A ST…

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WHILE DRIVING THE VEHICLE SHUTS OFF WITH A RED TRIANGLE AND THE DISPLAY SAYS TO PULL OFF SAFELY. THIS HAS HAPPENED ABOUT 6 TIMES ALREADY. I HAVE TAKEN IT BACK TO THE FORD DEALER AND THEY REPLACED THE THROTTLE BODY BECAUSE THERE IS A SENSOR THAT FAILS IN THE UNIT AND THEY EXPLAINED THE FACTORY CALIBRATES THE WHOLE UNIT WITH A STEEP PRICE TAG. LUCKY I STILL HAVE 5000 MILES TILL WARRANTY EXPIRES. I GUESS A NUMBER OF TIMES IT WAS NOT A BIG DEAL TO PULL OVER ON THE SHOULDER AND RESTART THE VEHICLE AND CARRY ON. THIS LAST TIME WE HAD SERVICE DONE TO THE VEHICLE I INFORMED THE FORD SERVICE AGENT THAT WE WERE GOING ON A LONG TRIP AND IF WE SHOULD GET A RENTAL. HE WAS CONFIDENT THE WORK THEY PERFORMED WOULD RESOLVE THE SHUT DOWN ISSUE. WE LEFT LA AND WENT ON OUR WAY TO BISHOP FOR A GROUP HIKING TRIP. THE MARINER RAN FINE FOR 3/4 OF THE WAY AND AGAIN WHILE DRIVING ON A 2 LANE ROAD THE MARINER SHUTS OFF. I NEGOTIATED TO THE RIGHT AS MY SPEED WAS DECLINING AND A 18 WHEELER WAS PASSING ME UP ON THE RIGHT AND THE CAR BEHIND ME WAS GAINING ON MY REAR. IT WAS A BIT SCARY BUT WE MANAGED TO PULL OVER SAFELY. UPON TURNING OFF THE MARINER IGNITION AND RESTARTING WE CARRIED ON TO THE DESTINATION. IT WAS RAINING AND A ROAD CONDITIONS WERE NOT THE BEST BUT WE DID NOT WANT TO BE STRANDED ON THE SIDE OF THE ROAD. ONCE AGAIN AFTER DRIVING FOR 10 MINUTES THE MARINER SHUT OFF AND WITH THE LOSS OF POWER. NOT A SAFE SITUATION TO HAVE YOUR ENGINE SHUT OFF WHILE DRIVING IN A FREEWAY AT SPEED OF 65 AND TO SUDDENLY LOSS YOUR ENGINE WITH NO ABILITY TO ACCELERATE OUT OF A UNSAFE SITUATION. IT COULD BE VERY DANGEROUS IF WE WERE TRAVELING ON A WINDY SINGLE LANE ROAD WITHOUT A SHOULDER AS THERE ARE A BUNCH IN THE HIGHER ELEVATIONS WHERE WE HIKE. IT WOULD NOT BE SAFE TO STOP AND DEAL WITH THIS SITUATION AS CARS ARE COMING UP A HILL AND YOUR TRYING TO RESET THE IGNITION COMPUTER SYSTEM. *TR

NHTSA ODI #10619541

106,002 miles · Jul 19, 2014
EngineVehicle Speed Control

ON THE FREEWAY WITH CRUISE CONTROL ON AT 70 MPH IN THE FAST LANE THE MOTOR UNEXPECTEDLY STOPS AND THE "PULL OVER SAFELY LIGHT" CAME ON. THIS CAUSED A VERY DANGEROUS SITUATION CAUSING ME TO MOVE OVER FOUR LANES TO THE SHOULDER OF THE ROAD. AFTER THE VEHICLE WAS COMPLETELY STOPPED AND PUT IN PARK THE MOTOR RESTARTED. OVER THE LA…

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ON THE FREEWAY WITH CRUISE CONTROL ON AT 70 MPH IN THE FAST LANE THE MOTOR UNEXPECTEDLY STOPS AND THE "PULL OVER SAFELY LIGHT" CAME ON. THIS CAUSED A VERY DANGEROUS SITUATION CAUSING ME TO MOVE OVER FOUR LANES TO THE SHOULDER OF THE ROAD. AFTER THE VEHICLE WAS COMPLETELY STOPPED AND PUT IN PARK THE MOTOR RESTARTED. OVER THE LAST THREE MONTHS THIS HAS HAPPENED THREE TIMES. *TR

NHTSA ODI #10614692

62,300 miles · Jul 14, 2014
Electronic Stability Control (esc)EngineVehicle Speed Control

PCM, "STOP SAFELY NOW" & SHUT-DOWN PROBLEM AND I HAVE A RED TRIANGLE ILLUMINATED ON THE CLUSTER ACCOMPANIED BY AN AUDIBLE CHIME. IN ADDITION, THE MESSAGE CENTER WILL INDICATE "STOP SAFELY NOW" AND THE POWERTRAIN CONTROL MODULE WILL COMMAND THE VEHICLE TO SHUT DOWN. THIS IS WHERE EVER YOU ARE AND IT HAPPENS REALLY QUICKLY IT IS …

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PCM, "STOP SAFELY NOW" & SHUT-DOWN PROBLEM AND I HAVE A RED TRIANGLE ILLUMINATED ON THE CLUSTER ACCOMPANIED BY AN AUDIBLE CHIME. IN ADDITION, THE MESSAGE CENTER WILL INDICATE "STOP SAFELY NOW" AND THE POWERTRAIN CONTROL MODULE WILL COMMAND THE VEHICLE TO SHUT DOWN. THIS IS WHERE EVER YOU ARE AND IT HAPPENS REALLY QUICKLY IT IS FOR SURE A SAFETY HAZARD.... I DON'T UNDERSTAND WHY THIS HAS NOT BEEN RECALLED, SINCE SO MANY HAVE REPORTED THE SAME PROBLEMS THROUGHOUT THE YEARS. *TR

NHTSA ODI #10610456

15,000 miles · Jul 11, 2014
Electrical SystemEngine

THE CAR SHUTS OFF WITHOUT WARNING ON THE HIGHWAY AT SPEED CAUSING FEAR, DANGER AND A POTENTIAL FOR DISASTER. STILL DOING THIS MOST RECENT INCIDENT WAS JUNE 25, 2014. FORD REFUSES TO DO ANYTHING ABOUT THIS RECURRING PROBLEM I HAVE, AS DO MAY OTHER OWNERS OF FORD HYBRID VEHICLES. *TR

NHTSA ODI #10609764

102,100 miles · Jun 18, 2014
Engine

TRAVELING DOWN THE INTERSTATE, LEFT LANE @ 70 MPH. I HAD 1 VEHICLE BEHIND ME AND A SEMI TRUCK / TRAILER TO THE RIGHT AND ONE BEHIND HIM. WITHOUT WARNING THE ENGINE DIED AND I BEGAN COASTING IN TRAFFIC. I HIT MY FLASHERS AND THANKFULLY THE VEHICLE BEHIND ME WAS ALERT AND NOTICED MY INSTANT LOSS OF SPEED AND FLASHERS. THEY SLO…

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TRAVELING DOWN THE INTERSTATE, LEFT LANE @ 70 MPH. I HAD 1 VEHICLE BEHIND ME AND A SEMI TRUCK / TRAILER TO THE RIGHT AND ONE BEHIND HIM. WITHOUT WARNING THE ENGINE DIED AND I BEGAN COASTING IN TRAFFIC. I HIT MY FLASHERS AND THANKFULLY THE VEHICLE BEHIND ME WAS ALERT AND NOTICED MY INSTANT LOSS OF SPEED AND FLASHERS. THEY SLOWED LONG ENOUGH FOR BOTH BIG TRUCKS TO PASS ON MY RIGHT AND FOR ME TO GET OVER TO THE SHOULDER ON I-70. QUICK RESEARCH TURNS UP POSSIBLE ISSUES WITH A MECHANICAL / ELECTRICAL PUMP OR MAYBE THE THROTTLE BODY. I CALLED THE FORD DEALERSHIP AND TALKED TO THE SERVICE MANAGER WHO DIDN'T HAVE A CLUE WHAT WOULD CAUSE THE ISSUE AND WAS SURPRISED THAT I FOUND SEVERAL POSTINGS ON THE INTERNET WHERE PEOPLE HAD THE SAME ISSUE IN THE SAME MODEL VEHICLE. I VISITED THE FORD DEALERSHIP AND SPOKE WITH THE PARTS DEPARTMENT (2 INDIVIDUALS) WHO COULDN'T DECIDE WHICH WAS THE CORRECT PART NUMBER FOR THE MECHANICAL / ELECTRICAL PUMP. IT IS JUST A MATTER OF TIME BEFORE SOMEONE EXPERIENCES THIS ISSUE AND CAN'T GET OUT OF TRAFFIC AND IS INVOLVED IN A SERIOUS OR FATAL ACCIDENT AS A RESULT. IT IS A KNOWN ISSUE AND I ALSO NOTICED THERE IS A CLASS ACTION LAWSUIT FILING BECAUSE SO MANY HAVE EXPERIENCED THIS SAME ISSUE. I'D BE INTERESTED TO KNOW WHAT CRITERIA NEEDS TO BE MET BEFORE THE NHTSA TAKES ACTION AGAINST FORD / MERCURY. *TR

NHTSA ODI #10604407

41,000 miles · Jun 13, 2014
EngineEngine And Engine Cooling

TL* THE CONTACT OWNS A 2008 MERCURY MARINER HYBRID. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 50 MPH, THE VEHICLE SUDDENLY STALLED. THE CONTACT INDICATED THAT AFTER THE INCIDENT THE HIGH TEMPERATURE SENSOR LIGHT ILLUMINATED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE DEFECT. THE FAI…

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TL* THE CONTACT OWNS A 2008 MERCURY MARINER HYBRID. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 50 MPH, THE VEHICLE SUDDENLY STALLED. THE CONTACT INDICATED THAT AFTER THE INCIDENT THE HIGH TEMPERATURE SENSOR LIGHT ILLUMINATED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE DEFECT. THE FAILURE MILEAGE WAS 41,000. UPDATED 08/27/14*LJ THE CONSUMER STATED THE COOLANT PUMP WAS THE CAUSE OF THE FAILURE. THE VEHICLE WAS REPAIRED. UPDATED 09/5/2014 *JS

NHTSA ODI #10598173

87,650 miles · Mar 8, 2014
Engine

DRIVING IN FAST LANE OF FREEWAY WHEN "STOP SAFELY NOW" MESSAGE WITH RED ALERT CAME ON. THE ENGINE STOPPED RUNNING. NO WARNING, NO ABILITY TO DRIVE TO THE SIDE OF THE ROAD. THIS IS A KNOWN FAULT IN THIS VEHICLE. I CANNOT CONCEIVE OF A PROBLEM THAT WOULD REQUIRE THE ENGINE TO STOP IMMEDIATELY. IT IS JUST LUCK THAT WE GOT TO T…

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DRIVING IN FAST LANE OF FREEWAY WHEN "STOP SAFELY NOW" MESSAGE WITH RED ALERT CAME ON. THE ENGINE STOPPED RUNNING. NO WARNING, NO ABILITY TO DRIVE TO THE SIDE OF THE ROAD. THIS IS A KNOWN FAULT IN THIS VEHICLE. I CANNOT CONCEIVE OF A PROBLEM THAT WOULD REQUIRE THE ENGINE TO STOP IMMEDIATELY. IT IS JUST LUCK THAT WE GOT TO THE SIDE OF THE ROAD WITHOUT INCIDENT AS THERE WAS A LOT OF TRAFFIC, AND WITHOUT POWER, IT WAS JUST PLAIN LUCK THAT WE MANAGED TO GET TO THE SIDE OF THE ROAD. DOING INTERNET RESEARCH: THIS IS A KNOWN FAULT, BUT WITHOUT A SOLUTION OR A FIX. WHAT EVER THE PROBLEM, IT SEEMS RIDICULOUS THAT FORD HAS A MAJOR PROBLEM LIKE THIS THAT HAS THE ENGINE SIMPLY STOP. WE GOT TO THE SIDE OF THE ROAD. I SIMPLY TURNED OFF THE IGNITION AND RE-STARTED THE ENGINE, WITHOUT FURTHER PROBLEM. THERE MUST BE SOME WAY TO AT LEAST HAVE SOME WARNING TIME, OR A MEANS OF PROPULSION SUFFICIENT TO GET SAFELY TO THE ROADSIDE. EVEN FIVE MINUTES WORTH OF POWER WOULD BE SUFFICIENT. *TR

NHTSA ODI #10567948

Mileage unknown · Sep 30, 2013
Engine

WHILE TRAVELING HIGHWAY AT APPROXIMATELY 70MI/HR. THE VEHICLE STALLED AND "STOP VEHICLE SAFELY" LIGHT CAME ON. I NEEDED TO PULL OVER TURN CAR OFF WAIT AND RESTART ENGINE. THIS HAPPENED AGAIN ABOUT 25 MILES DOWN THE HIGHWAY. AFTER THE SECOND INCIDENT IT DID NOT HAPPEN UNTIL MY RETURN TRIP THE NEXT DAY REPEATING THE SAME AS ABOV…

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WHILE TRAVELING HIGHWAY AT APPROXIMATELY 70MI/HR. THE VEHICLE STALLED AND "STOP VEHICLE SAFELY" LIGHT CAME ON. I NEEDED TO PULL OVER TURN CAR OFF WAIT AND RESTART ENGINE. THIS HAPPENED AGAIN ABOUT 25 MILES DOWN THE HIGHWAY. AFTER THE SECOND INCIDENT IT DID NOT HAPPEN UNTIL MY RETURN TRIP THE NEXT DAY REPEATING THE SAME AS ABOVE. THIS DID HAPPEN TO ME ONCE BEFORE ABOUT A YR AGO. *TR

NHTSA ODI #10546290

68,390 miles · Sep 13, 2013
Engine

WHILE TRAVELING ON AN INTERSTATE HIGHWAY, CAR LOST POWER, SPEED DECLINED TO 25 MPH AND WENT INTO HYBRID MODE. "PULL OVER SAFELY" LIGHT WENT ON. WE PULLED OVER AND TURNED OFF ENGINE. AFTER A FEW MINUTES IT RESTARTED AND WE WERE ABLE TO DRIVE THE CAR AT NORMAL SPEED. THE OUTSIDE TEMPERATURE WAS HIGH--IN THE 90S--AND THE AIR CONDIT…

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WHILE TRAVELING ON AN INTERSTATE HIGHWAY, CAR LOST POWER, SPEED DECLINED TO 25 MPH AND WENT INTO HYBRID MODE. "PULL OVER SAFELY" LIGHT WENT ON. WE PULLED OVER AND TURNED OFF ENGINE. AFTER A FEW MINUTES IT RESTARTED AND WE WERE ABLE TO DRIVE THE CAR AT NORMAL SPEED. THE OUTSIDE TEMPERATURE WAS HIGH--IN THE 90S--AND THE AIR CONDITIONING WAS ON HIGH WHEN THE POWER FAILED. WE HAD A SIMILAR INCIDENT ABOUT A MONTH EARLIER WHILE TRYING TO PARK THE CAR ON A HOT DAY WITH AIR CONDITIONING ON..SPEED WAS MINIMAL BECAUSE WE WERE PARKING BUT CAR LOST POWER AND PULL OVER SAFELY LIGHT WENT ON. AFTER SECOND INCIDENT WE TOOK CAR TO A FORD DEALER WHO SAID THE HYBRID SYSTEM COOLING PUMP HAD FAILED AND NEEDED TO BE REPLACED. COST TO REPLACE THE PUMP WAS $470. *TR

NHTSA ODI #10543409

Official recalls

0

No recalls in this snapshot.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

2

DP22005 · Pedestrian Alert Sounds

Opened Jan 27, 2023 · Closed Aug 7, 2023

Status: closed (inferred from source dates) · Electrical System:propulsion System

NHTSA received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at NHTSA.gov under ODI Number 11486072. FMVSS 141 establishes performance requirements for pedestrian alert sounds for motor vehicles. The standard applies to hybrid and electric vehicles that have a gross vehicle weight rating of 4,536 KG or less or are defined as low-speed vehicles. The standard became fully applicable to all such vehicles manufactured on or after March 1, 2021.On January 27, 2023, NHTSA opened Defect Petition (DP) 22-005 to evaluate the subject matter described in the petition. On June 24, 2023 and as supplemented on June 25, 2023, the petitioner notified NHTSA he was withdrawing his petition. The petitioner indicated that, based on his review of data, there is no justification for asserting potential benefits that could be derived from actions sought by my petition. Based on the petitioner's withdrawal, DP22-005 is closed. Closure of this DP does not represent a determination by NHTSA regarding the subject matter of the petition.

DP15001 · Loss Of Power Steering While Driving

Opened Apr 1, 2015 · Closed Jun 14, 2018

Status: closed (inferred from source dates) · Steering:electric Power Assist System

On May 27, 2014, amended June 2, 2014, Ford Motor Company (Ford) submitted a Defect Information Report (DIR) to NHTSA describing a safety defect that may result in a sudden loss of power steering assist while driving in approximately 746,067 model year (MY) 2008 through 2011 Ford Escape vehicles equipped with electric power assisted steering (NHTSA 14V-284, Ford 14S05). Ford's DIR described the defect condition as a poor signal to noise ratio [SNR] in the torque sensor within the Electric Power Assisted Steering (EPAS) system [which] does not allow the PSCM to determine the driver's steering input. When the system detects this fault condition, it transitions the EPAS system to the fail-safe/manual steering mode.Ford's DIR indicates that loss of power steering assist while driving would require higher steering effort at lower vehicle speeds, which may result in an increased risk of a crash.Ford's remedy instructs dealers to check the Power Steering Control Module (PSCM) for Diagnostic Trouble Codes (DTCs) to determine the proper repair procedure. If no DTCs are present, dealers are to update the PSCM and instrument cluster module software. The updated PSCM software changes the torque sensor fault strategy so that the SNR condition does not result in a loss of power steering assist while driving.In addition, audible and visual warnings are provided for torque sensor faults.If DTCs indicating faults in the torque sensor, PSCM or Power Steering Motor (motor) are present in the initial recall inspection, the dealer performs the following repairs: 1) replaces the torque sensor for torque sensor faults (DTC B2278); or 2) replaces the steering column for faults related to the PSCM (DTC B1342) or motor (DTC B2277).Continued in attachment pages