P1144 Code - Air Assist Control Valve Circuit Malfunction
Quick Answer
The Front Heated Oxygen Sensor (or O2 sensor 1) is placed into the exhaust manifold. Common causes include Faulty Front Heated Oxygen Sensor Bank 1, Front Heated Oxygen Sensor Bank 1 harness is open or shorted, Front Heated Oxygen Sensor Bank 1 circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1144 indicates Air Assist Control Valve Circuit Malfunction.
- Common causes
- Common causes include Faulty Front Heated Oxygen Sensor Bank 1, Front Heated Oxygen Sensor Bank 1 harness is open or shorted, Front Heated Oxygen Sensor Bank 1 circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1144 Description
What are the Possible Causes of the DTC P1144?
- Faulty Front Heated Oxygen Sensor Bank 1
- Front Heated Oxygen Sensor Bank 1 harness is open or shorted
- Front Heated Oxygen Sensor Bank 1 circuit poor electrical connection
- Inappropriate fuel pressure
- Faulty fuel injectors
- Intake air leaks may be faulty
- Exhaust gas leaks
How to Fix the DTC P1144?
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 P1144 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 P1144 code?
Need more information on how to fix the P1144 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1144 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- P1144 Audi — Mass Air Flow Sensor Open/Short To Ground
- P1144 Buick — HO2S Bank 1 Sensor 3 Rich Or High Voltage
- P1144 Cadillac — HO2S Bank 1 Sensor 3 Rich Or High Voltage
- P1144 Chevrolet — HO2S Bank 1 Sensor 3 Rich or High Voltage
- P1144 Chrysler — Fuel Rail Pressure Malfunction Positive Volume Deviation
- P1144 Dodge — Fuel Rail Pressure Malfunction Positive Volume Deviation
- P1144 GMC — HO2S Bank 1 Sensor 3 Rich or High Voltage
- P1144 Infiniti — Heated Oxygen Sensor 1 Rich Shift Monitoring
- P1144 Jeep — Fuel Rail Pressure Malfunction Positive Volume Deviation
- P1144 Nissan — Heated Oxygen Sensor 1 Rich Shift Monitoring
- P1144 Subaru — Pressure Sensor Circuit High Input
- P1144 Volkswagen — Mass Air Flow Sensor Open/Short To Ground
Frequently Asked Questions about P1144 Code
1. What are the common symptoms of OBDII code P1144 (Air Assist Control Valve Circuit Malfunction)?
- The common symptoms include rough idling, reduced engine performance, and an illuminated check engine light.
2. What can cause the OBDII code P1144 to trigger?
- The code P1144 can be triggered by a faulty air assist control valve, damaged wiring or connectors, or a problem with the valve's circuit.
3. How can I diagnose the cause of OBDII code P1144?
- To diagnose the issue, you can use an OBDII scanner to read the code, visually inspect the air assist control valve and its connections, and perform a wiring continuity test.
4. Is it safe to continue driving with OBDII code P1144 active?
- It is not recommended to continue driving with the code active, as it can lead to further engine issues and reduced fuel efficiency.
5. How can I repair OBDII code P1144?
- Repairing the code may involve replacing the air assist control valve, repairing damaged wiring or connectors, or resetting the code after fixing the underlying issue.
6. Can OBDII code P1144 be a false alarm?
- While rare, there is a possibility of the code being triggered falsely due to a temporary glitch. It's recommended to clear the code and see if it reappears before proceeding with repairs.
7. What are some tips for preventing OBDII code P1144 from occurring?
- Regularly maintaining your vehicle, checking the air assist control valve for any signs of wear, and ensuring proper electrical connections can help prevent the code from occurring.
8. Will OBDII code P1144 affect my vehicle's emissions?
- Yes, OBDII code P1144 can impact your vehicle's emissions by causing incomplete combustion, which may lead to increased emissions output.
9. How long does it typically take to repair OBDII code P1144?
- The repair time can vary depending on the exact cause of the code. In some cases, it can be a quick fix, while in others, it may require more extensive troubleshooting and repairs.
10. Can I clear OBDII code P1144 without fixing the underlying issue?
- While you can clear the code temporarily, it's important to address the underlying problem to prevent further damage to your vehicle and ensure optimal performance.
Discuss the causes and fixes for P1144 OBDII Code
Code P1144 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.
