Nissan Armada P2197: 02 Sensor B2S1 – Signal Stuck Lean

P2197 is a general DTC code that indicates that the signal coming from your Nissan Armada’s first O2 sensor on the bank two side of the engine is stuck giving off a lean signal.  The voltage reading from a normal oxygen sensor should look something like a heartbeat, whereas with P2197 the voltage looks like a … Read more

Nissan Armada P2195 Causes + Diagnosis

P2195 is a general OBD2 code that indicates that the signal coming from your Nissan Armada’s 1’st O2 sensor on Bank 1 Sensor 1 is stuck lean. DTC P2195 is a general code, which means that it has the same meaning for any make, model, or year.  It is most typically caused by a bad … Read more

Nissan Armada P2272:  B2S2 O2 Sensor – Stuck Lean

P2272 in the Nissan Armada is a general diagnostic trouble code.  It means that the “bank 2” downstream oxygen sensor (behind the catalytic converter) is continuously sending voltage that indicates a lean air/fuel mixture.   This does not necessarily mean that the vehicle is running lean (although it can, but usually doesn’t).  P2272 is typically … Read more

Nissan Armada P2270: Symptoms, Causes, + Diagnosis

P2270 is a general DTC trouble code, which means it has the same meaning for the Nissan Armada as it would any other vehicle.  It means that the oxygen sensor located on bank 1 behind the catalytic converter is continuously sending voltage that indicates a lean air/fuel mixture.   This does not necessarily mean that … Read more

Nissan Armada DTC P1564:  ASCD Switch Malfunction

P1564 is a common code that can occur in the Nissan Armada.  It indicates that the ECM has detected an issue with the Automatic Speed Control Device (ASCD) More specifically, with the voltage resistance at the switch itself. ASCD is just Nissan’s overly complicated way of saying cruise control.  It should not be considered a … Read more

Nissan Armada P0452:  FUEL Tank Pressure Low Diagnosis

P0452 is a generic OBD II code that can occur in the Nissan Armada.  It means that your Armada’s EVAP system has detected low fuel tank pressure. The evaporative emissions control system (EVAP) sends fuel vapors from the fuel tank to the intake manifold to be burned off.  When the pressure in the system is … Read more

P2189 Nissan Armada:  Lean Condition at Idle (Bank 2)

P2189 is a DTC code that can occur in your Nissan Armada.  It indicates the air fuel mixture is too lean at idle, specifically in bank 2 (we’ll cover how to find bank 2 later).  Its is different from the much more common P0174, which indicates that bank 2 is lean at any engine speed. … Read more

Nissan Armada P2187:  Bank 1 A/F Mixture Too Lean”

P2187 is a DTC code that can occur in the Nissan Armada.  It indicates the air fuel mixture is too lean at idle. The technical definition for P2187 “System Too Lean at Idle: Bank 1”.  The code is thrown after your Armada’s oxygen sensor on Bank 1 (usually sensor 1) has detected that the air … Read more

Nissan Armada Overheating While Idle: Causes + Fix

There are a few reasons why your Nissan Armada would be overheating when idling.  The most common ones include a bad thermostat, water pump, electric fans, and low coolant level.  This guide is intended to help you find the cause of this overheating in the most efficient way possible.  So, let’s start with what’s easy … Read more