Nissan X-Trail: P0171 and P0174 Diagnosis

P0171 and P0174 both indicate that there is a lean condition present in your Nissan X-Trail.  By themselves, these are some of the most common OBD2 codes.   When they appear together, it indicates that the entire engine is running lean. Definition Both of these codes are generic, which means they have the same meaning … Read more

Nissan X-Trail:  Clutch Slipping → Diagnosis

Your Nissan X-Trail’s clutch provides a direct connection between the engine and transmission.  Without it, it can’t move at all. This connection requires a tremendous amount of pressure.  This guide is intended to help you determine why your clutch is slipping on the flywheel. Note:  This article is for manual cars only.  Here’s the automatic … Read more

Nissan X-Trail:  LOOSE FUEL CAP Message Diagnosis

This guide will help you determine why you are getting the LOOSE FUEL CAP message in your Nissan, and the likely reasons that it came on. Table of Contents 1. Loose Fuel Cap Meaning 2. Symptoms of a Loose Fuel Cap 3. How to Reset LOOSE FUEL CAP Warning 4. Is It Safe To Drive … Read more

Nissan X-Trail:  Engine Sputtering (Causes + Diagnosis)

A sputtering engine can indicate a number of problems.  If your Nissan X-Trail has a sputter, it is most likely going to be caused by bad fuel system, ignition system, MAF sensor, or bad catalytic converter.  Your X-Trail’s engine is a giant pump.  It pulls in air (where it is measured by the mass airflow … Read more

Nissan X-Trail:  Brake Pedal Going to Floor Diagnosis

The single most important safety feature in your Nissan X-Trail is a good set of brakes.  If your brake pedal is going to the floor, it indicates that there is a serious problem in the braking system.  When the pedal goes to the floor, it’s usually caused by a bad master cylinder, leaking brakes, bad … Read more

Nissan X-Trail Shifting Hard: Causes + Diagnosis

One of the most common automatic transmission problems is shifting hard.  If your Nissan X-Trail has a hard shifting transmission, it can be uncomfortable to drive and a sign of serious problems. If your vehicle’s transmission is shifting hard, it can cause a harsh ride and lead to potential damage over time. Numerous factors can … Read more

Nissan X-Trail:  P1273 Code Diagnosis

 P1273: Air Fuel Ratio Sensor (Sensor 1 Bank 1) – Lean Shift Monitoring P1273 is a common Nissan diagnostic code.  It has the same meaning for your X-Trail as it would any other Nissan.   It indicates that the air fuel ratio sensor has detected a lean shift in the exhaust output.  It’s usually caused by … Read more

Nissan X-Trail:  Warped Rotors → Symptoms & Causes

  Rotors are metal discs that are visible behind the X-Trail’s wheel. They work together with the calipers and brake pads to slow down your Nissan X-Trail. Due to braking friction, rotors have to withstand and dissipate a tremendous amount of heat. This causes the rotor surface to be uneven making the brake pedal feel … Read more