P0144 Nissan Code - Heated Oxygen Sensor 3 Heater Control Circuit Low
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 Nissan indicates Heated Oxygen Sensor 3 Heater Control Circuit Low.
- 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 Nissan 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 Nissan?
- 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 Nissan?
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 Nissan 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.
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Frequently Asked Questions about P0144 Nissan Code
1. What does the OBDII code P0144 mean on a Nissan?
P0144 indicates an issue with the Heated Oxygen Sensor 3 Heater Control Circuit being low, meaning the heater circuit isn't working properly.
2. What are the symptoms of code P0144 on a Nissan?
Symptoms may include a check engine light, reduced fuel efficiency, rough idling, or failed emissions testing.
3. Which sensor does P0144 refer to on a Nissan?
P0144 refers to Oxygen Sensor 3, which is typically located downstream of the catalytic converter on Bank 1.
4. What causes the P0144 code to appear?
Common causes include a faulty oxygen sensor, damaged wiring or connectors, a blown fuse, or a problem with the vehicle's powertrain control module (PCM).
5. Can I drive my Nissan with the P0144 code?
While the car may still be drivable, it can lead to poor fuel economy and potential damage to the catalytic converter over time. It's best to address the issue promptly.
6. How do I diagnose the P0144 code on a Nissan?
Start by inspecting the wiring and connectors for damage, checking the sensor's resistance, and testing the heater circuit with a multimeter.
7. How do I fix the P0144 code on a Nissan?
Repairs may involve replacing the oxygen sensor, repairing damaged wiring, replacing a blown fuse, or reprogramming the PCM if necessary.
8. How much does it cost to fix the P0144 code on a Nissan?
Repair costs can range from $150 to $400 depending on whether the oxygen sensor needs replacement or if wiring repairs are required.
9. Can a dirty or clogged catalytic converter trigger the P0144 code?
While unlikely, a severely clogged catalytic converter could contribute to sensor issues, though P0144 is more commonly caused by electrical problems.
10. What tools are needed to troubleshoot the P0144 code on a Nissan?
You'll need an OBDII scanner, a multimeter to test the circuit, and basic hand tools to inspect and potentially replace the sensor.
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