P0144 Code - O2 Sensor Circuit High Voltage Bank 1 Sensor 3
Quick Answer
The rear heated oxygen sensor (or sensor 3 for some vehicles), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Common causes include Faulty Heated Oxygen Sensor Bank 1 Sensor 3, Heated Oxygen Sensor Bank 1 Sensor 3 harness is open or shorted, Heated Oxygen Sensor Bank 1 Sensor 3 circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- P0144 indicates O2 Sensor Circuit High Voltage Bank 1 Sensor 3.
- Common causes
- Common causes include Faulty Heated Oxygen Sensor Bank 1 Sensor 3, Heated Oxygen Sensor Bank 1 Sensor 3 harness is open or shorted, Heated Oxygen Sensor Bank 1 Sensor 3 circuit poor electrical connection.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Code P0144 Description
This sensor is made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. Under normal conditions the heated oxygen sensor 3 is not used for engine control operation.
What are the Possible Causes of the DTC P0144?
- Faulty Heated Oxygen Sensor Bank 1 Sensor 3
- Heated Oxygen Sensor Bank 1 Sensor 3 harness is open or shorted
- Heated Oxygen Sensor Bank 1 Sensor 3 circuit poor electrical connection
How to Fix the DTC P0144?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0144 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P0144 code?
Need more information on how to fix the P0144 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0144 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- P0144 Ford — O2 Sensor Circuit High Voltage Bank 1 Sensor 3
- P0144 Infiniti — Heated Oxygen Sensor 3 Heater Control Circuit Low
- P0144 Mazda — Rear HO2S Circuit High Input
- P0144 Mercedes-Benz — O2 Sensor Circuit High Voltage Bank 1 Sensor 3
- P0144 Mitsubishi — Heated Oxygen Sensor Heater Control Circuit High Voltage Bank 1 Sensor 3
- P0144 Nissan — Heated Oxygen Sensor 3 Heater Control Circuit Low
- P0144 Toyota — HO2S13 Circuit High Voltage
- P0144 Volkswagen — O2 Sensor Circuit High Voltage Bank 1 Sensor 3
Frequently Asked Questions about P0144 Code
No Frequently Asked Questions about P0144 Code found.
Discuss the causes and fixes for P0144 OBDII Code
Code P0144 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
