The 2005 Nissan Altima equipped with the 2.5L engine exhibits a documented, widespread failure of the crankshaft position sensor (CPS). The sensor overheats and loses signal integrity, causing the engine control module to shut down the engine without warning—often at highway speeds or in heavy traffic. Owners describe their cars stalling at 35–70 mph, losing power steering and brakes, and narrowly avoiding collision with trucks and other vehicles.
Nissan issued recall 07V527000 in December 2007, but it addresses only ECM reprogramming, not the defective sensor itself. Owners report that after the free reprogramming, their cars continue to stall. They then face $200–$500 bills to replace the sensor—a $37 part that Nissan claims is not a recall item on 2005 models, despite identical recalls for 2002–2003 Altimas. Many owners have replaced the sensor multiple times. Some report that dealerships misrepresent the recall, charging diagnostic fees or falsely claiming new sensors are required before reprogramming.
Nissan has consistently refused to extend the recall to include sensor replacement or to reimburse owners. Owners report difficulty starting, Service Engine lights, jerking and hesitation, and cascading failures (catalytic converter damage from repeated stalls). The company blames owners for mileage-based wear and dismisses customer service inquiries. A pattern of near-identical complaints spanning 2007–2014 points to a design or manufacturing defect Nissan has declined to remedy despite clear safety risk.
Failure modes owners describe
Crankshaft Position Sensor Overheating and Failure
The crankshaft position sensor (CPS) overheats due to inadequate thermal design or manufacturing defects, causing signal interruption to the engine control module (ECM). When the signal dropout is too brief for the ECM to detect, the engine shuts down without warning. Even after ECM reprogramming under recall 07V527000, the underlying CPS defect remains unaddressed, leading to repeated failures. Many owners report replacing the sensor multiple times.
When: 2002–2010 timeframe; failures occur after several years of ownership or coinciding with hot weather. Many owners report first failure in the 40,000–80,000 mile range; some as early as 41,000 miles; others at 56,000–100,000+ miles.
Symptoms owners cite: Engine stalls without warning at low speeds or on highways; Service Engine Soon/Check Engine light illumination; Difficulty starting or slow cranking; Engine hesitation, jerking, or sputtering; Repeated stalling after previous repairs; Loss of power steering and brakes when engine shuts down
Codes mentioned: P0335 (Crankshaft Position Sensor Circuit), P0340 (Camshaft Position Sensor Circuit), P2135 (Throttle Position Sensor), P0420 (Catalyst System Efficiency Below Threshold)
Repairs/costs cited: Replacement of the crankshaft position sensor costs owners $37–$486 out-of-pocket (most commonly $200–$300 range). Some owners report replacing it 2–3 times. Dealers inconsistently charge for replacement despite recall eligibility.
Recalls/TSBs owners mention: Recall 07V527000 (Dec 2007) and 06V223 (2006) cover ECM reprogramming only, not CPS replacement. NHTSA Campaign R0712 exists. Nissan refuses to extend recall to cover CPS replacement on 2005 models, claiming it is outside warranty. Earlier recalls (2002–2003 models) included CPS replacement but 2005 models are excluded despite identical failure modes.
ECM Reprogramming Ineffectiveness
Dealerships reprogram the ECM as mandated by recall 07V527000 to mask brief CPS signal dropouts. The reprogramming does not fix the underlying CPS overheating problem and often fails to prevent subsequent stalls. Owners report the Service Engine light returning within hours or days, and stalling resuming immediately after the recall service.
When: Post-recall service 2007–2009 and beyond. Failures resume within days to weeks of ECM reprogramming.
Symptoms owners cite: Service Engine light remains on or returns after recall service; Stalling continues or resumes shortly after ECM reprogramming; Engine jerking and hesitation persist; Intermittent power loss and hesitation at highway speeds
Codes mentioned: P0335 (persists after reprogramming)
Repairs/costs cited: Reprogramming is performed free under recall but requires subsequent paid CPS replacement ($200–$300) to resolve the issue. Some dealerships incorrectly claim new sensors must be installed before reprogramming can proceed.
Recalls/TSBs owners mention: Nissan maintains that ECM reprogramming is the sole remedy under recall 07V527000 and 06V223. Nissan refuses to acknowledge that the CPS itself is the root cause and declines to extend the recall to include mandatory CPS replacement on 2005 models.
Timing Chain Noise and Failure
The secondary timing chain on certain 2.5L engines produces buzzing or whining noises, indicating wear or tensioner failure. Timing chain failure can lead to catastrophic engine damage and occurs at low mileage (76,000+ miles), well before the expected engine lifespan.
When: At 76,717 miles; failure typically emerges after 60,000 miles on 2004–2007 models with V6 engines.
Symptoms owners cite: Buzzing or whining noise from the engine area; Metal-on-metal grinding sounds
Codes mentioned:
Repairs/costs cited: Replacement requires engine removal and teardown; estimated cost $1,578–$2,200. Part of Service Bulletin NTB07-042.
Recalls/TSBs owners mention: Nissan denies warranty coverage on the basis that the failure occurs outside the standard warranty period (beyond 60,000 miles). NHTSA goodwill recommendations have been denied. No recall issued.
Engine Shut-Down in Heavy Traffic and on Highways
The engine cuts off unexpectedly while the vehicle is in motion, often during high-traffic conditions or at highway speeds (35–70 mph). The loss of power eliminates power steering and brakes, creating severe safety hazards. Multiple owners report near-collisions with trucks or other vehicles unable to stop in time.
When: Occurs randomly during operation; some owners report events multiple times weekly after recall service.
Symptoms owners cite: Sudden engine stall without warning at any speed; Loss of power steering (tight, unresponsive brakes); Loss of engine braking capability; Reduced ability to maneuver or pull to the shoulder; Multiple restart attempts required; sometimes no restart for 10+ minutes
Codes mentioned: P0335 (CPS-related)
Repairs/costs cited: None cited as effective short-term fix; repeated CPS replacement required.
Recalls/TSBs owners mention: Nissan does not acknowledge engine shutdown as a recall-eligible defect and refuses responsibility once the vehicle is out of warranty. Customer service has been described as unhelpful and dismissive.
Catalytic Converter and Head Gasket Damage Secondary to Sensor Failure
Prolonged stalling and repeated hot restarts from sensor malfunction can cause catalytic converter failure and debris ingestion into the cylinders, damaging the head gasket and potentially cracking cylinders. This represents a cascading failure mode in which the primary sensor defect leads to secondary engine component destruction.
When: At 80,000+ miles; occurs after repeated stalls and restart attempts.
Symptoms owners cite: Antifreeze found on spark plugs; Smoke from exhaust pipe during stall event; Engine refuses to restart after initial stall; Check Engine light (P0420 Catalyst System Efficiency code)
Codes mentioned: P0420 (Catalyst System Efficiency Below Threshold)
Repairs/costs cited: Catalytic converter replacement; head gasket replacement; cylinder repair/engine replacement may be required. Costs not cited in narratives.
Recalls/TSBs owners mention: Catalytic converter failure covered under Federal Emissions Warranty (80,000 miles) but only in limited jurisdictions (California). Nissan denies warranty if vehicle originated in a non-emissions state.
Difficulty Cranking and No-Start Events
Owners report prolonged cranking times, weak-battery-like starting behavior, and complete no-start conditions unrelated to battery health. These align with CPS degradation and signal loss to the ECM.
When: Typically precedes or accompanies stalling events; can persist for days or weeks before total failure.
Symptoms owners cite: Slow cranking; weak starter-like behavior despite good battery; Car takes multiple attempts to start; No-start condition lasting hours or overnight, then resolving spontaneously; Hesitant acceleration after hard-start events
Codes mentioned: P0335 (CPS failure)
Repairs/costs cited: CPS replacement resolves the issue.
Recalls/TSBs owners mention: Not addressed in recall; owners charged full diagnostic and replacement fees.
Synthesized from 338 NHTSA owner complaints — unverified consumer
allegations, summarized for patterns. The verbatim filings appear below.