| 1 | 0 | 3 | 4 | 3 | 4 |
2009 Infiniti G repairs by problem area
Engine (28%)
Transmission and Drivetrain (9%)
Brakes and Traction Control (7%)
Suspension and Steering (13%)
Electrical and Air Conditioning (20%)
Paint, Rust, Leaks, Rattles, and Trim (20%)
Other (2%)
Chart based on 230 repairs.
2009 Infiniti G engine repair cost distribution
$2500+ (3%)
$1000 - $2499 (7%)
$500 - $999 (18%)
$100 - $499 (27%)
< $100 (45%)
Chart based on 60 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2009 Infiniti G
Engine not specified
| 52480 mi | Radiator fans changed. We bought an extended wRranty so it was covered but part was 850.00 and shop time was extra. |
2009 Infiniti G 4dr Sedan
328-horsepower 3.7L V6 7-speed shiftable automatic RWD
| 25000 mi | Overheated and stalled. Connection to radiator cooling fan had become "unplugged." |
| 18000 mi | battery not charging. Dealer re-flashed ECM under warranty and fixed problem |
| 83300 mi | Catalytic converter plugged. Repaired under warranty. |
| 14300 mi | I was seeing hard downshifts from 40mph to 30mph in DS mode making it almost unusable to use the sport mode. |
| 46000 mi | Had my battery, evap valve replaced. |
| 83000 mi US $112 |
ECU had to be updated. Traveling from midwest to CI and NM, engine experienced serious misfire at low RPM. ECU updated/flashed at Nissan dealer in Santa Fe NM. Problem resolved. |
| 56000 mi | Emission system TSB - stuck valve that drew power even when the car was turned off. Valve caused the battery to discharge so the car would not start after two days. |
| 83000 mi US $800 |
Dead battery again and again. Replaced alternator and another battery died. Traded in car after that. |
| 1000 mi | TSB issued by Infiniti on hard downshifting and engine decel from 4th to 3rd. Dealer flashed the transmission computer and problem seems solved. Car is great otherwise, and dealership was very accomodating with loaner during the overnight work. |
| 74000 mi | Bad catalytic converter. Warranty repair under 80k miles. |
| 106000 mi US $300 |
Leak in the upper and lower hoses. Old hoses were replaced with new hoses. |
| 112647 mi US $231 |
Serpentine belt replacement |
| 120000 mi | Whistling/squeaking sound coming from engine bay when vehicle is warmed up. Dealer identified serpentine belt pulleys needed replacement, causing discoloration of the serpentine belt. |
| 20000 mi | car would not start after sitting for just 10 minutes or so with the door open or the radio on. had to update the ecm |
| 86000 mi US $700 |
Replace Y pipe on exhaust. |
| 8000 mi US $104 |
ECM replaced due to excessive noise ie, the ECM made a high pitched whine and was replaced under warranty. Dealer did not enter VIN into new ECM correctly. Had local Nissan dealer reflash computer to avoid travel time to Infiniti dealer. |
2009 Infiniti G 4dr Sedan
328-horsepower 3.7L V6 7-speed shiftable automatic AWD
| 150000 mi US $1630 |
Rear timing chain cover gasket was leaking and causing low internal oil pressure. 10 hours labor for a very cheap part |
| 27000 mi | Service engine soon light was on. Code was for an emissions leak. Service engine light on again. Code was for an emissions leak. |
| 97000 mi US $150 |
Fuel [pulse] damper leaking causing fuel smell. Replaced by an experienced amateur in 2.5 hours. Was a dealer only part. |
| 77000 mi | Upper radiator coolant hose was leaking and had to be replaced. |
| 35000 mi US $250 |
reflash ecm |
| 158000 mi US $2900 |
replaced water pump and timing chain |
| 165000 mi US $270 |
coolant hose coupler failed. leaking |
| 3000 mi | It was some type of control for the transmission. The car would tell me to put it in park when it already was in park. |
| 74000 mi US $400 |
Exhaust leak |
| 110000 mi US $2700 |
Oil gallery gasket failure |
| 37000 mi | Engine would not rev past 2400 rpm and was accompanied by a "chugging" that made it undriveable. Dealer said they reprogrammed engine and transmission. |
| 34000 mi | Check engine light came on. Took it in and an exhaust sensor was not functioning. Dealer had to order the part and it fixed less than a week later. |
| 40000 mi US $97 |
Car went into "safe mode" and would let the tach get over 2,500 rpm. Was driving in Pennsylvania at the time and had to pull over turn car off. Car bucked and had no power. Very scary situation. Had to manually shift to get speed. |
| 33000 mi US $85 |
evaporator leak repaired under warranty |
| 34000 mi US $180 |
car would not drive over 20mph in limp mode - cleaned sensor reflashed computer |
| 120000 mi US $1400 |
replace water pump, thermostat because they were leaking. |
2009 Infiniti G 4dr Sedan
328-horsepower 3.7L V6 6-speed manual RWD
| 116000 mi US $670 |
Service Engine Soon came on. Turned out lower hose coupling was broken and leaking on O2 sensor causing sensor to fail. replaced sensor and coupling. |
| 116000 mi US $600 |
So the car stalled on the highway. Worn engine mount was replaced because we heard a vibration noise within the cabin. All told $600 but no understanding of why the car stalled and we can still hear the noise in the cabin, which I have since learned may be to do with a fuel damper. Gonna live with it. $350. |
| 56184 mi US $114 |
Car was choking/bucking above 2000 RPM. Check engine light on. Car was not really driveable, but a well-rated shop was a few blocks away, so I limped it over there. Code P0524, engine oil pressure too low. No freeze frame data. Oil pressure was verified ok, oil level was ok (1/2 way between low and full). Bucking was due to limp-home mode. Topped off oil, cleared codes, test drove. Problem didn’t return. |
| 59000 mi | Car was choking/bucking above 2000 RPM. Check engine light on. Code P0524, engine oil pressure too low. Bucking was due to limp-home mode. This had happened once before. Cleared codes, test drove. Problem didn’t return for over a month. |
| 60000 mi US $5100 |
Car was choking/bucking above 3000 RPM. Pending code P0524, engine oil pressure too low. Bucking was due to limp-home mode. This happened twice before, and clearing the code fixed the problem. Dealer verified faulty oil seal on rear valve timing cover, causing internal oil leakage and low oil pressure to the valve timing controllers. Seals not sold separately, so you have to replace the whole rear timing cover. Either way, a very labor-intensive job. Car was out of warranty but had very low miles, so I asked the service advisor if Nissan would pay for part of it. He checked, and they agreed to pay 20%. While dealer was replacing faulty oil seals on rear timing cover, they found evidence of coolant leakage from the coolant pump. Replaced coolant pump. |
| 88040 mi C $150 |
Check engine light coming on every few days and car entering limp mode, code P0524. Diagnostic advised wrong type of oil may have been used. Oil flushed and replaced, light has come on a few times since less often since, may another visit. |
| 46800 mi | On one occasion, car began sputtering in 1st, 2nd and 3rd gear after a period of idling. No check engine light was displayed. Codes stored - showed faulty rear O2 sensor & cracked catalytic converter. All replaced under warranty.Issue fixed. |
| 152000 mi US $125 |
Vehicle was starting to not start after ignition button pushed - everything including lights - would simply shut down. Car was jumped one time and was able to be started. Additional event occurred and car simply started an hour later. Dealership unable to detect problem; battery fairly new so that was ruled out as a problem. Issue has not recurred in last 7 weeks; no repair actually completed. |
| 48000 mi | Misfire CEL was coming on at cold start. Cleaning throttle bodies solved issue. |
| 63000 mi | One catalytic converter failed and produced a CEL. Dealer repaired under emissions warranty. |
| 88000 mi US $300 |
Oil galley gaskets failed, leading to dangerously low engine oil pressure and the car going into limp mode. Repaired it myself, so a low parts cost but a monumental amount of labor involved. |
2009 Infiniti G 4-door
6-cylinder automatic 2WD
| 41000 mi | MAF defective, replaced under warranty. Unsafe to drive due to limp mode, so towed. |
| 47300 mi | Catcon failed. |
| 2000 mi | With new 7at, having some issue while down-shifting. It seems when car is slowing down, the transmission downshifts too fast creating "engine brake/jerky" sensation. Some dealers are aware of the problem but no software update/TSB yet. |
| 12000 mi | 7at down shifting issue, finally a tsb was released that solved problem |
2009 Infiniti G 2dr Coupe
330-horsepower 3.7L V6 7-speed shiftable automatic RWD
| 64700 mi US $250 |
Replace radiator hoses |
| 73626 mi US $723 |
Replaced oil and filters, replaced broken oil gasket causing leak |
| 55700 mi US $550 |
Throttle body cleaning and ECM software update. They said the main problem was software "acting up." |
2009 Infiniti G 2dr Coupe
330-horsepower 3.7L V6 7-speed shiftable automatic AWD
| 62000 mi US $125 |
exhaust leak between midpipe and muffler. Gasket and bolts replaced |
| 24300 mi US $500 |
Valve sensor in emission control system stopped working |
| 42000 mi US $800 |
air sensor needed to be replaced |
| 85000 mi US $800 |
Upper radiator hose seeping sporadically. Pressure test confirmed leakage and owner had both upper and lower radiator hose replaced |
| 134000 mi US $1200 |
Replace drivers side catalytic converter due to interval rattling/noise. |
| 92100 mi US $900 |
Water pump failure , 3.7 litre requires complete timing chain cover removal . Water pump and chain guides replaced , coolant and oil change done at this time |
2009 Infiniti G 2dr Coupe
330-horsepower 3.7L V6 6-speed manual RWD
| 133000 mi US $90 |
Replaced the six spark plugs with OEM replacements. Cleaned both sides of the throttle bodies and replaced the O-ring of each. With clean throttle bodies and new plugs the car runs and drives much more smoothly. |
| 86000 mi US $1000 |
Hydraulic bushing used to attach differential to rear subframe failed. Dealer requires to change the whole subframe assembly as they have no part to replace the bushing. Went to see a third party to replace the bushing with a polyurethane one. |
| 32000 mi | A speaker was emitting a 1 kHz tone whenever the car was moving. The main ECU was replaced to fix this problem. After this, a check engine code was tripped from the engine cold start system, which took several repair trips to fix. |
2009 Infiniti G 2dr Coupe
| 111600 mi C $100 |
Replace rusted muffler brackets |
| 122760 mi C $600 |
Alternator replaced |
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