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

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3  What does this mean?

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 do I fix code P1143 GMC

    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.

Cost of diagnosing the P1143 GMC code

    Labor: 1.0

    The cost of diagnosing 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.

P1143 GMC 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. Currently we have no further information abouth the P1143 GMC OBDII code. Please post your question on the Q&A section for more information: AutoCodes.com Questions.
OBDII Code P1143 GMC - HO2S Bank 1 Sensor 3 Lean System or Low Voltage - Engine-Codes.com

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