2023 Nissan Altima: Check engine light
Common wear/failure (not a recall)
Symptoms
Owners of the 2023 Altima report: check engine light. CarComplaints.com lists 1 owner complaints, average mileage 50 miles.
NHTSA has 6 owner complaints for the 2023 Altima in this area. Examples:
- NHTSA complaint ODI #11747812 (filed 07/01/2026): “I was driving down the freeway at about 70 miles an hour. when a warning came up, saying engine malfunction power reduced, the car then started the shaking a bit and not getting any power. smoke started pouring out of the hood. i then pulled over open the hood…”
- NHTSA complaint ODI #11730481 (filed 04/10/2026): “The engine mounted high pressure fuel pump became loose and unseated because the engine-side mounting threads failed. the pump lifted off its mounting surface, the head of the engine, and oil came out around the top of the engine. this failure caused sudden lo…”
Likely causes
Sources do not establish a single root cause; diagnosis is needed. Owner-reported fixes are listed below.
Fix, in plain English
Most common owner-reported solutions on CarComplaints.com: none clearly reported. Check for open recalls and extended warranty coverage with a dealer before paying out of pocket.
DIY difficulty: Pro
Internal engine work (lifters, oil consumption, fuel dilution diagnosis) requires engine teardown or dealer software/tests. (Our assessment.)
Cost
No sourced cost range: get a written quote after diagnosis.
Typical parts (search links, no affiliate codes)
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