P0345 on Infiniti
Camshaft Position Sensor Circuit Malfunction (Bank 2)
P0345 on Infiniti vehicles indicates camshaft position sensor circuit malfunction (bank 2). Au7o has documented this code across 5 Infiniti models — most commonly on FX35, FX45, M35. P0345 means the engine computer detected a malfunction in the camshaft position sensor circuit on bank 2 (the cylinder bank not containing cylinder number one). The camshaft position sensor tells the computer where the camshaft is in its rotation, which it uses for precise fuel injection and ignition timing and to manage cylinder identification. When the signal is missing, erratic, or out of range, the computer can't reliably track cam position, which may cause hard starting, rough running, stalling, or a no-start. The fault is usually in the sensor, its wiring, or the connector rather than the camshaft itself. Typical repair costs on Infiniti range from $150 to $3,500, depending on the specific model and root cause.
Common Causes of P0345
- •Failed camshaft position sensor (bank 2)
- •Damaged wiring, connector, or corrosion in the sensor circuit
- •Metal debris or oil contaminating the sensor tip
- •Faulty reluctor/tone wheel on the camshaft
- •Open or short in the sensor signal or power circuit
- •Loose timing chain/belt or VVT issue affecting cam timing
- •Poor ground or low reference voltage to the sensor
P0345 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(2 issues)
- Timing Chain Guide Wear and Chain Noise2003-2008
The VK45DE V8 used in the FX45 can develop timing chain guide and tensioner wear, leading to chain rattle on startup or at idle. Owners report the issue more often on higher-mileage engines or vehicles with poor oil change history, where sludge and low oil pressure accelerate guide and tensioner wear.
- 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 QX50(1 issue)
- Timing Chain / VVEL Rattle and Front Timing Cover Oil Leaks on VQ37VHR2014-2018
Owners of the 3.7L VQ37VHR-equipped QX50 report a metallic rattle at cold start and oil seepage from the front timing cover area. On this engine, timing chain guide/tensioner wear and RTV-sealed front cover leaks can develop with age and heat cycling; because the VVEL/timing components sit behind the front cover, diagnosis often starts with distinguishing harmless brief startup noise from persistent chain or guide wear. Multiple owner complaints and repair discussions note oil smell, visible seepage down the front of the engine, and expensive labor because the front cover must be resealed and timing components inspected at the same time.
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View P0345 across all makes →Frequently Asked Questions
What does P0345 mean on Infiniti?▼
P0345 stands for "Camshaft Position Sensor Circuit Malfunction (Bank 2)." P0345 means the engine computer detected a malfunction in the camshaft position sensor circuit on bank 2 (the cylinder bank not containing cylinder number one). The camshaft position sensor tells the computer where the camshaft is in its rotation, which it uses for precise fuel injection and ignition timing and to manage cylinder identification. When the signal is missing, erratic, or out of range, the computer can't reliably track cam position, which may cause hard starting, rough running, stalling, or a no-start. The fault is usually in the sensor, its wiring, or the connector rather than the camshaft itself. On Infiniti specifically, this code is documented across 5 models.
What causes P0345 on Infiniti vehicles?▼
Common causes on Infiniti: Failed camshaft position sensor (bank 2), Damaged wiring, connector, or corrosion in the sensor circuit, Metal debris or oil contaminating the sensor tip, Faulty reluctor/tone wheel on the camshaft, Open or short in the sensor signal or power circuit. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0345 on a Infiniti?▼
Repair costs on Infiniti range from $150 to $3,500, depending on the specific model and root cause.
Which Infiniti models have P0345 documented?▼
Au7o has documented P0345 on 5 Infiniti models: FX35, FX45, M35, M37, QX50.