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P0163: O2 Sensor Circuit Low Voltage Bank 2 Sensor 3

Severity
Low
NHTSA Reports
1
Vehicles Affected
1
System
Powertrain

What Does P0163 Mean?

P0163 is a diagnostic trouble code indicating: O2 Sensor Circuit Low Voltage Bank 2 Sensor 3. This code relates to the fuel and air metering system. It has been reported in NHTSA complaints across 1 different vehicle models.

Symptoms of P0163

Common Causes

Real Owner Reports

From NHTSA complaint database — actual owner descriptions.

"THE FUEL SENSOR LEVEL ON MY 2006 NISSAN XTERRA IS FAULTY. IT'S BEEN GOING OFF AND ON FOR SEVERAL MONTHS NOW. OBVIOUSLY CAUSING THE CHECK ENGINE LIGHT TO COME ON. THE EMISSIONS PEOPLE CHECKED THE CODE AND IT IS P0163(FUEL LEVEL SENSOR HIGH INPUT). FROM SEARCHING THE WEB IT APPEARS TO BE A COMMON PROB"

— Nissan Xterra owner, 07/10/2009

Source: NHTSA Complaints Database

Most Reported Vehicles for P0163

Based on NHTSA owner complaint data.

# Vehicle Reports
1 NISSAN XTERRA

Frequently Asked Questions

Can I drive with this code?
You can usually drive short distances, but fuel economy will suffer and emissions will be higher. Get it diagnosed within a week.
Will this code cause my car to fail emissions?
Yes — any active check engine light will cause an automatic emissions test failure in most states.
How much does it typically cost to fix?
Depends on the root cause. Simple fixes like a gas cap ($5-15) to sensor replacement ($150-300) to more complex repairs ($500+).

What To Do Next

Possible Fixes

  • 🔧 Have the code scanned with a professional-grade scanner to read freeze frame data
  • 🔧 Test the relevant sensor(s) with a multimeter before replacing
  • 🔧 Clean or replace the mass air flow (MAF) sensor; check for vacuum leaks
  • 🔧 If DIY repair isn't feasible, get a diagnostic from a trusted mechanic ($50-150)
  1. 1
    Find your vehicle above

    Click your make and model for real owner reports and common causes specific to your vehicle.

  2. 2
    Check for recalls

    Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.

  3. 3
    Get a professional diagnosis

    A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

Related Codes

B0130 A/V Sensor Washer Fluid B Control Circuit B0131 A/V Sensor Washer Fluid C Control Circuit B0132 A/V Sensor Washer Fluid D Control Circuit B0133 A/V Sensor Washer Fluid E Control Circuit B0134 A/V Sensor Washer Fluid F Control Circuit P0130 O2 Sensor Circuit Bank 1 Sensor 1 P0131 O2 Sensor Circuit Low Voltage Bank 1 Sensor 1 P0132 O2 Sensor Circuit High Voltage Bank 1 Sensor 1