Engine-Codes - Cadillac - P0147 CADILLAC

P0147 CADILLAC - HO2S Heater Circuit Bank 1 Sensor 3

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

P0147 CADILLAC Possible Causes

  • Faulty HO2S Heater Circuit Bank 1 Sensor 3
  • HO2S Heater Circuit Bank 1 Sensor 3 harness is open or shorted
  • HO2S Heater Circuit Bank 1 Sensor 3 circuit poor electrical connection

How is the P0147 CADILLAC 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 P0147 CADILLAC code

Labor: 1.0

The cost to diagnose the P0147 CADILLAC code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
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Possible Symptoms

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

P0147 CADILLAC Meaning

When the ignition is turned on, the battery voltage is supplied to HO2S 3 heater to provide for faster sensor warm-up, thus allowing the sensor to become active in a shorter period of time. Powertrain Control Module (PCM) reads the amount of time necessary for the sensor to become active after start-up. If PCM determines too much time was required for HO2S 3 to become active, the Diagnostic Trouble Code (DTC) P0147 will set.

More Information

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