P1614 on Nissan
NATS Signal Error
P1614 on Nissan vehicles indicates nats signal error. Au7o has documented this code across 1 Nissan model — most commonly on 350Z. This is a Nissan/Infiniti-specific code meaning the immobilizer (NATS anti-theft) system could not properly read the signal from the key's transponder chip — essentially a chain-of-communication error between the key, immobilizer antenna, and engine computer. Because the system can't confirm an authorized key, it blocks the engine from starting as an anti-theft measure, so the engine cranks but won't fire. It usually points to the key, the antenna ring, or wiring rather than the engine itself. Typical repair costs on Nissan range from $300 to $1,900, depending on the specific model and root cause.
Common Causes of P1614
- •Unprogrammed, damaged, or cheap aftermarket key/transponder
- •Weak or dead key fob battery
- •Faulty immobilizer antenna ring around the ignition
- •Blown immobilizer-related fuse
- •Damaged or loose wiring/connectors in the NATS circuit
- •Interference from a second key or metal object near the key
- •Faulty immobilizer control unit or BCM
P1614 on Nissan by Model
Nissan 350Z(1 issue)
- Steering Lock Module and NATS Immobilizer Failure2003-2009
The 2003-2009 Nissan 350Z experiences failures of the NATS (Nissan Anti-Theft System) immobilizer and steering lock module. The NATS antenna ring around the ignition cylinder fails to communicate with the key transponder, causing intermittent no-start conditions. The ECU can enter lockout mode after repeated failed start attempts. Additionally, the mechanical steering lock can bind, preventing key insertion or rotation. These issues leave the vehicle completely inoperable until repaired. The NATS system requires dealer-level diagnostic equipment (Nissan CONSULT) for reprogramming, making roadside repair impossible.
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View P1614 across all makes →Frequently Asked Questions
What does P1614 mean on Nissan?▼
P1614 stands for "NATS Signal Error." This is a Nissan/Infiniti-specific code meaning the immobilizer (NATS anti-theft) system could not properly read the signal from the key's transponder chip — essentially a chain-of-communication error between the key, immobilizer antenna, and engine computer. Because the system can't confirm an authorized key, it blocks the engine from starting as an anti-theft measure, so the engine cranks but won't fire. It usually points to the key, the antenna ring, or wiring rather than the engine itself. On Nissan specifically, this code is documented across 1 model.
What causes P1614 on Nissan vehicles?▼
Common causes on Nissan: Unprogrammed, damaged, or cheap aftermarket key/transponder, Weak or dead key fob battery, Faulty immobilizer antenna ring around the ignition, Blown immobilizer-related fuse, Damaged or loose wiring/connectors in the NATS circuit. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P1614 on a Nissan?▼
Repair costs on Nissan range from $300 to $1,900, depending on the specific model and root cause.
Which Nissan models have P1614 documented?▼
Au7o has documented P1614 on 1 Nissan model: 350Z.