P0335 on Infiniti
Crankshaft Position Sensor A Circuit Malfunction
P0335 on Infiniti vehicles indicates crankshaft position sensor a circuit malfunction. Au7o has documented this code across 5 Infiniti models — most commonly on FX35, FX45, M35. This code means the engine computer has lost or detected a faulty signal from the crankshaft position sensor (sensor A), which tells the computer exactly how fast and in what position the crankshaft is rotating. That signal is essential for timing the spark and fuel injection, so a problem here can cause hard starting, stalling, or a no-start condition. The computer sets this code when the crank sensor signal is missing, erratic, or out of its expected pattern. Causes range from a failed sensor or damaged wiring to a problem with the reluctor (tone) ring the sensor reads. Typical repair costs on Infiniti range from $150 to $5,000, depending on the specific model and root cause.
Common Causes of P0335
- •Failed crankshaft position sensor
- •Damaged, corroded, or loose sensor wiring/connector
- •Metal debris or oil contamination on the sensor tip
- •Damaged or misaligned reluctor (tone) ring
- •Excessive air gap between sensor and tone ring
- •Wiring shorted or open in the sensor circuit
- •Faulty PCM/ECM (rare)
P0335 on Infiniti by Model
Infiniti FX35(1 issue)
- Camshaft / Crankshaft Position Sensor Failure2003-2012
The FX35 commonly develops intermittent failures of the camshaft position sensors and sometimes the crankshaft position sensor, causing stalling, hard starts, or limp operation. Heat and age degrade the sensor electronics, and this issue is widely reported across Nissan/Infiniti VQ applications of the era.
Infiniti FX45(1 issue)
- Camshaft and Crankshaft Position Sensor Failure2003-2008
Camshaft and crankshaft position sensors are a well-known failure point on many Nissan and Infiniti vehicles of this era, including the FX45. Heat and age can cause intermittent signal loss, resulting in stalling, hard starting, limp operation, or a no-start condition.
Infiniti M35(1 issue)
- Camshaft and Crankshaft Position Sensor Failure2006-2010
The VQ35DE engine used in the M35 is known for intermittent camshaft and crankshaft position sensor failures. Heat and age can cause the sensors to send erratic signals, leading to hard starting, stalling, limp mode, or a check engine light.
Infiniti M37(1 issue)
- Camshaft / Crankshaft Position Sensor Failure2011-2013
The VQ37VHR engine can develop intermittent camshaft or crankshaft position sensor failures, causing hard starts, stalling, or reduced performance. Heat and age can degrade the sensors or their signal quality, and owners across Nissan/Infiniti VQ applications frequently report these failures as mileage increases.
Infiniti M56(1 issue)
- Timing Chain Guide Wear / Chain Noise2011-2013
Owners of VK56VD-equipped M56 models report startup rattle and persistent front-engine timing noise related to timing chain guide and tensioner wear. As mileage increases, slack in the primary chain system can affect valve timing and trigger correlation faults, especially when oil change intervals have been extended.
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View P0335 across all makes →Frequently Asked Questions
What does P0335 mean on Infiniti?▼
P0335 stands for "Crankshaft Position Sensor A Circuit Malfunction." This code means the engine computer has lost or detected a faulty signal from the crankshaft position sensor (sensor A), which tells the computer exactly how fast and in what position the crankshaft is rotating. That signal is essential for timing the spark and fuel injection, so a problem here can cause hard starting, stalling, or a no-start condition. The computer sets this code when the crank sensor signal is missing, erratic, or out of its expected pattern. Causes range from a failed sensor or damaged wiring to a problem with the reluctor (tone) ring the sensor reads. On Infiniti specifically, this code is documented across 5 models.
What causes P0335 on Infiniti vehicles?▼
Common causes on Infiniti: Failed crankshaft position sensor, Damaged, corroded, or loose sensor wiring/connector, Metal debris or oil contamination on the sensor tip, Damaged or misaligned reluctor (tone) ring, Excessive air gap between sensor and tone ring. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0335 on a Infiniti?▼
Repair costs on Infiniti range from $150 to $5,000, depending on the specific model and root cause.
Which Infiniti models have P0335 documented?▼
Au7o has documented P0335 on 5 Infiniti models: FX35, FX45, M35, M37, M56.