P2628 Acura Code - Air/Fuel Ratio Sensor Bank 1 Sensor 1 Circuit High Voltage
Quick Answer
The front air/fuel ratio (A/F) sensor (bank 1, sensor 1) is installed in the exhaust manifold and detects oxygen content in the exhaust gas. Common causes include Faulty Air/Fuel Ratio Sensor Bank 1 Sensor 1, Air/Fuel Ratio Sensor Bank 1 Sensor 1 harness is open or shorted, Air/Fuel Ratio Sensor Bank 1 Sensor 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
- P2628 Acura indicates Air/Fuel Ratio Sensor Bank 1 Sensor 1 Circuit High Voltage.
- Common causes
- Common causes include Faulty Air/Fuel Ratio Sensor Bank 1 Sensor 1, Air/Fuel Ratio Sensor Bank 1 Sensor 1 harness is open or shorted, Air/Fuel Ratio Sensor Bank 1 Sensor 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 P2628 Acura Description
What are the Possible Causes of the DTC P2628 Acura?
- Faulty Air/Fuel Ratio Sensor Bank 1 Sensor 1
- Air/Fuel Ratio Sensor Bank 1 Sensor 1 harness is open or shorted
- Air/Fuel Ratio Sensor Bank 1 Sensor 1 circuit poor electrical connection
How to Fix the DTC P2628 Acura?
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 P2628 Acura 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 P2628 Acura Code
1. What does the OBDII code P2628 mean on an Acura?
P2628 indicates that the air/fuel ratio sensor for Bank 1 Sensor 1 is reporting a high voltage signal, suggesting an issue with the sensor circuit or related components.
2. What are the common symptoms of a P2628 code?
Symptoms may include poor fuel economy, rough idling, hesitation during acceleration, a check engine light, and possible difficulty passing emissions tests.
3. What causes the P2628 code to appear on an Acura?
Common causes include a faulty air/fuel ratio sensor, damaged wiring or connectors in the sensor circuit, exhaust leaks, or an ECM/PCM software issue.
4. How do I diagnose the P2628 code on my Acura?
Start by inspecting the air/fuel ratio sensor and its wiring for damage. Check for exhaust leaks near the sensor, test the sensor’s voltage output, and verify proper operation of the ECM/PCM.
5. Can I drive my Acura with a P2628 code?
Driving with this code is not recommended as it can lead to poor engine performance, reduced fuel efficiency, and potential damage to other components like the catalytic converter.
6. How do I fix the P2628 code on an Acura?
Repairs may involve replacing the air/fuel ratio sensor, repairing damaged wiring or connectors, fixing exhaust leaks, or reprogramming the ECM/PCM if necessary.
7. Is the P2628 code specific to Acura vehicles?
No, P2628 is a generic OBDII code that can appear on other makes and models, but the diagnostic and repair process may vary slightly depending on the vehicle.
8. How much does it cost to fix the P2628 code on an Acura?
Repair costs can range from $200 to $500 or more, depending on whether the air/fuel ratio sensor needs replacement or if additional repairs, such as fixing wiring or exhaust leaks, are required.
9. Can a dirty or clogged air filter cause the P2628 code?
While a dirty air filter is unlikely to directly cause this code, it can contribute to engine performance issues that may exacerbate sensor problems.
10. Do I need to reset the ECM/PCM after fixing the P2628 code?
Yes, after completing repairs, you should clear the code with an OBDII scanner and perform a test drive to ensure the issue is resolved.
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