AutoCodes - OBDII Code List - P2A03 2003 TOYOTA HIGHLANDER

P2A03 2003 TOYOTA HIGHLANDER - A/F Sensor Circuit Slow Response Bank 2 Sensor 1

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3    What is this?
Table of contents

P2A03 2003 TOYOTA HIGHLANDER Possible Causes

  • Faulty Air fuel Ratio (A/F) Bank 2 Sensor 1
  • Air fuel Ratio (A/F) Bank 2 Sensor 1 harness is open or shorted
  • Air fuel Ratio (A/F) Bank 2 Sensor 1 circuit poor electrical connection
  • Fuel pressure
  • Fuel injector
  • Intake air leaks

How do I fix code P2A03 2003 TOYOTA HIGHLANDER?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
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Cost of diagnosing the P2A03 2003 TOYOTA HIGHLANDER code

Labor: 1.0

The cost of diagnosing the P2A03 2003 TOYOTA HIGHLANDER code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

When is the code detected?

The P2A03 Code is set when A/F sensor output voltage change value is below regular value against fuel trim change value.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P2A03 2003 TOYOTA HIGHLANDER Description

The Air-Fuel ratio (A/F) sensor varies its output voltage in proportion to the air-fuel ratio. Based on the output voltage, the ECM determines if the air-fuel ratio is RICH or LEAN and adjusts the stoichiometric air-fuel ratio. The ECM also checks the fuel injection volume compensation value to check if the A/F sensor is deteriorating or not. A/F sensor response deterioration is determined by the ratio of the A/F sensor output voltage variation and fuel trim variation.
OBDII Code P2a03 2003 Toyota Highlander - A/F Sensor Circuit Slow Response Bank 2 Sensor 1 - AutoCodes.com

More Information

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