Engine-Codes - Gmc - P1143 GMC

P1143 GMC - HO2S Bank 1 Sensor 3 Lean System or Low Voltage

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

P1143 GMC Possible Causes

  • Faulty Oxygen Sensor Bank 1
  • Oxygen Sensor Bank 1 harness is open or shorted
  • Oxygen Sensor Bank 1 circuit poor electrical connection

How is the P1143 GMC code repair?

Start by checking 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.

What is the cost to diagnose the P1143 GMC code

Labor: 1.0

The cost to diagnose the P1143 GMC code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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Possible Symptoms

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

P1143 GMC Meaning

HO2S Bank 1 Sensor 3 Lean System or Low Voltage is the generic description for the P1143 Gmc code, but the manufacturer may have a different description for your model and year vehicle. Currently, we have no further information abouth the P1143 Gmc OBDII code.

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