P1122 Honda Code - Throttle Position Sensor Signal Higher Than Expected
Quick Answer
The P1122 diagnostic trouble code (DTC) for Honda vehicles indicates that the throttle position sensor (TPS) signal is higher than expected. Common causes include Faulty throttle position sensor, Corroded or damaged wiring/connectors in the TPS circuit, Vacuum leak in the intake manifold or throttle body. 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
- P1122 Honda indicates Throttle Position Sensor Signal Higher Than Expected.
- Common causes
- Common causes include Faulty throttle position sensor, Corroded or damaged wiring/connectors in the TPS circuit, Vacuum leak in the intake manifold or throttle body.
- 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.
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Code P1122 Honda Description
The P1122 diagnostic trouble code (DTC) for Honda vehicles indicates that the throttle position sensor (TPS) signal is higher than expected. The TPS is a crucial component of the engine management system, as it monitors the position of the throttle valve and sends this information to the engine control module (ECM). This data is used by the ECM to adjust fuel delivery and ignition timing, ensuring optimal engine performance and fuel efficiency.
Common Causes of P1122 Honda
- Faulty throttle position sensor
- Corroded or damaged wiring/connectors in the TPS circuit
- Vacuum leak in the intake manifold or throttle body
- ECM malfunction or software issue
- Incorrect throttle body adjustment
Symptoms of P1122 Honda
- Rough idling or unstable engine speed
- Poor acceleration or hesitation when pressing the gas pedal
- Stalling or difficulty starting the engine
- Reduced fuel efficiency
- Check Engine Light illuminated on the dashboard
How to Fix P1122 Honda
- Use a diagnostic scan tool to retrieve and document the P1122 trouble code.
- Inspect the throttle position sensor, wiring, and connectors for any visible damage or corrosion.
- Test the TPS using a multimeter to check for proper voltage output.
- Check for vacuum leaks in the intake system and repair as necessary.
- If the TPS is faulty, replace it with a new one following manufacturer's guidelines.
Cost to Fix P1122 Honda
The cost of repairing a P1122 code on a Honda vehicle can vary depending on the specific model and year, as well as the extent of the issue. In general, replacing a throttle position sensor can cost between $100 and $200 for the part alone. Labor costs can range from $80 to $150 per hour, and the total repair bill may amount to $200-$400 on average. It's recommended to consult a professional mechanic for an accurate estimate based on your vehicle's condition and location.
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Information for Specific Honda Models
- P1122 1996 Honda Civic — Throttle Position Sensor Signal Higher Than Expected
- P1122 1997 Honda Civic — Throttle Position Sensor Signal Higher Than Expected
- P1122 1998 Honda Civic — Throttle Position Sensor Signal Higher Than Expected
- P1122 1999 Honda Civic — Throttle Position Sensor Signal Higher Than Expected
- P1122 2000 Honda Civic — Throttle Position Sensor Signal Higher Than Expected
Frequently Asked Questions about P1122 Honda Code
What does the OBDII code P1122 mean for a Honda?
The P1122 code indicates that the throttle position sensor (TPS) signal is higher than expected, suggesting an issue with the TPS or its circuit.
What are the common symptoms of the P1122 code?
Symptoms include poor acceleration, rough idling, stalling, reduced fuel efficiency, and the check engine light turning on.
What causes the P1122 code on a Honda?
Common causes include a faulty throttle position sensor, damaged wiring, corroded connectors, or issues with the engine control module (ECM).
Can a P1122 code cause driveability issues?
Yes, this code can lead to erratic throttle response, reduced power, or difficulty maintaining speed.
How can I diagnose the P1122 code on my Honda?
Start by inspecting the TPS, wiring, and connectors for damage or corrosion. Use a multimeter to test the sensor's voltage output and check for proper signal range.
Can I drive with the P1122 code active?
Driving with this code is not recommended as it can affect throttle response and engine performance, increasing the risk of unsafe driving conditions.
How is the P1122 code fixed?
Repairs may include replacing the throttle position sensor, repairing damaged wiring or connectors, and resetting the ECM.
What tools are needed to troubleshoot the P1122 code?
You’ll need an OBDII scanner, a multimeter, and basic tools to inspect and replace components such as the TPS.
How much does it cost to repair a P1122 code?
Repair costs vary but typically range from $100 to $300 for parts and labor, depending on whether the TPS or wiring needs replacement.
Can a dirty throttle body cause the P1122 code?
Yes, a dirty throttle body can affect the TPS signal and lead to this code, so cleaning the throttle body may help resolve the issue.
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