O2 Oxygen Sensor Upstream Downstream for Nissan Titan Armada (2013-2015) 5.6L

Direct-Fit Upstream & Downstream O2 Oxygen Sensor Kit for 2013-2015 Nissan Titan, Armada (A60 / WA60)

What it Does: This 4-piece upstream and downstream oxygen sensor kit monitors pre- and post-catalytic converter exhaust gas oxygen levels on the 2013-2015 Nissan Titan (A60) and 2014-2015 Armada (WA60) equipped with the VK56DE 5.6L V8 to maintain closed-loop air-fuel trim and catalytic efficiency.

The Stock Nissan Titan & Armada Sensor Degradation

Factory oxygen sensors on the A60 Titan and WA60 Armada endure continuous thermal cycling and exhaust soot from the VK56DE 5.6L V8. Over time, internal heater circuits open from vibration, while silicone, oil ash, and carbon foul the porous ceramic sensing element. When upstream wideband sensors turn sluggish or downstream sensors skew, the ECM locks into open-loop rich fuel mapping, triggering P0133, P0153, P0031, or false P0420/P0430 catalyst efficiency faults.

Common Symptoms of a Failing OEM Oxygen Sensor

• Check Engine Light & Heater Faults: Triggers P0031, P0051, P0133, or P0153 due to open internal heater coils or slow lean-to-rich voltage switching.
• Rich Fuel Trim & Fouled Plugs: Erratic upstream A/F feedback forces excessive injector pulse width, causing black exhaust smoke and rough idle.
• Failed Emissions & Poor MPG: Inaccurate post-cat readings trigger P0420/P0430 codes and drop highway fuel economy.

The Direct-Fit Matched O2 Sensor Solution

Replacing all four sensors simultaneously as a matched set restores balanced bank-to-bank fuel control across both cylinder heads. Built to match OEM specifications for 234-9135 and 19316342, these direct-fit sensors feature laser-welded stainless steel housings, fast-light-off internal heaters, and high-purity zirconia sensing elements resistant to thermal shock. Factory-style weatherproof connectors and pre-cut harness lengths plug directly into the OEM sub-harnesses on the VK56DE without splicing or adapter harnesses.

What's Included

• 2x Upstream Oxygen Sensors
• 2x Downstream Oxygen Sensors

Technical Specifications

Compatibility

• 2013-2015 Nissan Titan 5.6L V8 (A60)
• 2014-2015 Nissan Armada 5.6L V8 (WA60)

Frequently Asked Questions & Fitment Warnings

Does this fit the A60 Titan and WA60 Armada?

Yes. This kit is a direct fit for the 2013-2015 Nissan Titan and 2014-2015 Nissan Armada equipped with the VK56DE 5.6L V8 engine. Does not fit 2013 Armada models or newer A61/Y62 platforms; confirm your engine and model year before ordering.

Will replacing these sensors clear P0133, P0153, or P0420/P0430 codes?

Yes, if caused by sensor failure. Replacing sluggish upstream sensors resolves P0133/P0153 response codes, while fresh downstream sensors eliminate false P0420/P0430 triggers when catalytic converters are mechanically intact.

Are the connectors plug-and-play or is wire splicing required?

Plug-and-play only. Each sensor includes OE-style connectors matching 234-9135 and 19316342; apply a light coat of oxygen-sensor-safe anti-seize to the threads while avoiding the sensing tip.

The Nissan Heavy-Duty Standard

Built for the thermal demands of heavy towing and high-load hauling, this complete four-sensor kit keeps your VK56DE running at stoichiometric precision. Restore clean closed-loop fueling and dependable long-term drivability across all four exhaust banks.