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Engine coolingPart report

2003 Nissan Pathfinder Engine cooling Problems

Complaints
25about this part
Share
23%of 110 total for the year
Median mileage
51,500miles
Trend
StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.

NHTSA recorded 25 complaints about the engine cooling of the 2003 Nissan Pathfinder, 23% of the 110 complaints for this model year. Where a mileage was given, the median is 51,500 miles.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“Exhaust tubes on 2003 Nissan Pathfinder cracked before reached the 24,000 warranty expiration. Nissan patched tubes rather than replaced them. The patch failed this year and I am fighting with them because they should have used new parts in the first place. I can not tell if this is endangering the environment, however, I know that many Pathfinder owners are experiencing early failure of the exhaust system and Nissan is not owning up to their design defect.”

NHTSA complaint #10241919, filed 2008-09, 22,000 miles

“My husband and I purchased a new 2003 Nissan Pathfinder se in july 03. In 2007, the check engine light came on. We took it to a dealer, who informed us that we needed to have the entire exhaust system replaced due to a crack in the pipe and the 02 sensor was making the light come on. They never informed us of a patch kit available. We did have the entire exhaust system replaced in 2008. We later came to find out this problem is occurring for many others with the same vehicle. …”

NHTSA complaint #10278049, filed 2009-07, 75,000 miles

“I own a 2003 Nissan Pathfinder le. Took it to a Nissan dealer and they said the passenger side resonator was leaking out of the outboard seam. The driver side resonator was leaking out of both the outboard and inboard seam. The exhaust could be very easily felt when the engine was running and there is exhaust smell in the cabin. The muffler was freely swinging. I had to replace the muffler. The resonators should be replaced by Nissan as many people are having the same problem. I hope you can do something or that a class action lawsuit is filed.”

NHTSA complaint #10311834, filed 2010-02, 75,000 miles

“September 2007- went to repair shop for oil change, was made aware of cracked catalytic converter november 2007- rear exhaust pipe fell off january 2008- went to muffler shop, was told that 2 catalytic converters and entire exhaust pipe need replacing. May 2008- went to Nissan dealer, was told that it is not my catalytic converters, but my down pipes that have severe cracks in them. Quoted over $600 for repair kit, as this is something that they claim to have seen often enough to create a patch kit for. Quoted $1300 for new parts. …”

NHTSA complaint #10226738, filed 2008-05, 65,000 miles

“2003 Nissan Pathfinder. Cracked resonators/catalytic converters under vehicle allowing exhaust gas to enter vehicle. This is a very common problem with 2002/2003 Pathfinder owners and Nissan refuses to take action to correct this dangerous issue. No payment assistance has been offered by Nissan to help with the cost of the necessary repairs.”

NHTSA complaint #10253052, filed 2008-12, 65,000 miles

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
202512%
202411%
202311%
201911%
201811%
201721%
201611%
201510%
201451%
201351%
201214%
201025%
2009411%
2008237%
200712823%
200618522%
200529028%
200434%
20032523%
20023522%
2001167%
200054%
199966%
199864%
1997178%
1996149%
19955231%
19943538%
19932551%
1992827%
1991821%
19901437%
1989427%
1988529%
1987526%

Other parts of the 2003 Nissan Pathfinder

Suspension
21 complaints
Fuel system
19 complaints
Air bags
14 complaints
Steering
14 complaints
Brakes
13 complaints
Body and structure
12 complaints
Engine
6 complaints
Other or unknown
6 complaints
Vehicle speed control
4 complaints
Electrical system
3 complaints
Tires
3 complaints
Transmission and drivetrain
3 complaints

← All problems reported for the 2003 Nissan Pathfinder

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology