P1159 Honda Code - Air/Fuel Ratio Sensor 1 AFS+ Terminal Low Voltage
Quick Answer
The Air/Fuel Ratio (A/F) sensor 1 is installed in the exhaust system and detects oxygen content in the exhaust gas. Common causes include Faulty Air/Fuel Ratio Sensor 1, Air/Fuel Ratio Sensor 1 harness is open or shorted, Air/Fuel Ratio 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
- P1159 Honda indicates Air/Fuel Ratio Sensor 1 AFS+ Terminal Low Voltage.
- Common causes
- Common causes include Faulty Air/Fuel Ratio Sensor 1, Air/Fuel Ratio Sensor 1 harness is open or shorted, Air/Fuel Ratio 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 P1159 Honda Description
If the A/F sensor (sensor 1) voltage is low, the air/fuel ratio is lean, and the ECM uses A/F feedback control to issue a Rich command. If the A/F sensor (sensor 1) voltage is high, the air/fuel ratio is rich, and the ECM uses A/F feedback control to issue a Lean command.
What are the Possible Causes of the DTC P1159 Honda?
- Faulty Air/Fuel Ratio Sensor 1
- Air/Fuel Ratio Sensor 1 harness is open or shorted
- Air/Fuel Ratio Sensor 1 circuit poor electrical connection
How to Fix the DTC P1159 Honda?
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 P1159 Honda 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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Need Help with the Code?
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Frequently Asked Questions about P1159 Honda Code
1. What are common symptoms of OBDII code P1159 in a Honda related to the Air/Fuel Ratio Sensor 1 AFS+ Terminal Low Voltage?
The common symptoms include poor fuel economy, rough idling, hesitation or stalling during acceleration, and the illumination of the Check Engine Light.
2. What are the potential causes of OBDII code P1159 in a Honda indicating Air/Fuel Ratio Sensor 1 AFS+ Terminal Low Voltage?
Possible causes include a faulty air/fuel ratio sensor, wiring issues, poor electrical connection, or a malfunctioning Engine Control Module (ECM).
3. How does the Air/Fuel Ratio Sensor 1 AFS+ Terminal Low Voltage affect the performance of a Honda vehicle?
The incorrect air/fuel mixture readings caused by this issue can lead to inefficient combustion, reduced engine performance, and increased emissions.
4. Can driving with OBDII code P1159 related to the Air/Fuel Ratio Sensor 1 AFS+ Terminal Low Voltage cause further damage to the vehicle?
Continued driving with this issue may result in decreased fuel efficiency, potential damage to the catalytic converter, and overall reduced engine performance over time.
5. How is OBDII code P1159 related to the Air/Fuel Ratio Sensor 1 AFS+ Terminal Low Voltage diagnosed in a Honda?
Diagnostic tools such as an OBDII scanner are used to retrieve the trouble code. Further testing of the air/fuel ratio sensor, wiring, and connections may be necessary to pinpoint the exact cause.
6. Can a DIY enthusiast repair OBDII code P1159 in a Honda caused by the Air/Fuel Ratio Sensor 1 AFS+ Terminal Low Voltage?
While some basic checks like inspecting the sensor connections can be done by a DIYer, diagnosing and replacing components may require professional expertise and specialized tools.
7. What are some tips for preventing OBDII code P1159 related to the Air/Fuel Ratio Sensor 1 AFS+ Terminal Low Voltage in a Honda?
Regular maintenance, including checking and replacing oxygen sensors at recommended intervals, can help prevent issues leading to this error code.
8. How crucial is it to address OBDII code P1159 in a Honda due to the Air/Fuel Ratio Sensor 1 AFS+ Terminal Low Voltage promptly?
Prompt attention to this issue is recommended to prevent further damage to the vehicle, ensure optimal engine performance, and maintain fuel efficiency.
9. Is resetting the Check Engine Light after resolving OBDII code P1159 involving the Air/Fuel Ratio Sensor 1 AFS+ Terminal Low Voltage necessary?
After repairing the underlying issue causing the code, the Check Engine Light can be reset to clear the code from the system and monitor for any reoccurrence.
10. What is the typical cost of repairing OBDII code P1159 in a Honda caused by the Air/Fuel Ratio Sensor 1 AFS+ Terminal Low Voltage?
The cost of repair can vary depending on the exact cause of the issue, but it may involve sensor replacement, wiring repairs, or ECM reprogramming, with the total cost ranging from a few hundred to over a thousand dollars.
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