Engine-Codes - Chevrolet - P1143 CHEVROLET

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

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

P1143 CHEVROLET 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 CHEVROLET

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 CHEVROLET code

Labor: 1.0

The cost of diagnosing the P1143 CHEVROLET 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.

Possible Symptoms

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

P1143 CHEVROLET Meaning

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

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P1143 CHEVROLET More Information

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