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Engine-Codes – Honda – P1122 1996 Honda Civic

P1122 1996 Honda Civic Code - Throttle Position Sensor Signal Higher Than Expected

Quick Answer

The P1122 diagnostic trouble code (DTC) for a 1996 Honda Civic indicates that the throttle position sensor (TPS) signal is higher than expected. Common causes include Faulty throttle position sensor, Wiring or connector issues, Malfunctioning engine control module. 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 1996 Honda Civic indicates Throttle Position Sensor Signal Higher Than Expected.
Common causes
Common causes include Faulty throttle position sensor, Wiring or connector issues, Malfunctioning engine control module.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code P1122 1996 Honda Civic Description

The P1122 diagnostic trouble code (DTC) for a 1996 Honda Civic 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). The ECM uses this data to adjust fuel delivery and ignition timing, ensuring optimal engine performance and efficiency.

OBDII Code P1122 1996 Honda Civic - Throttle Position Sensor Signal Higher Than Expected
P1122 1996 Honda Civic Code - Throttle Position Sensor Signal Higher Than Expected

Common Causes of P1122 1996 Honda Civic

  1. Faulty throttle position sensor
  2. Wiring or connector issues
  3. Malfunctioning engine control module
  4. Poor electrical connection
  5. Corrosion or damage to TPS components

Symptoms of P1122 1996 Honda Civic

  1. Rough idling
  2. Stalling
  3. Hesitation during acceleration
  4. Decreased fuel efficiency
  5. Check engine light illuminated

How to Fix P1122 1996 Honda Civic

  1. Begin by diagnosing the issue using a scan tool to retrieve the DTC and monitor the TPS signal voltage.
  2. Inspect the TPS wiring and connectors for any damage or corrosion, repairing or replacing as needed.
  3. Test the TPS using a multimeter to ensure it is functioning within the specified voltage range.
  4. If the TPS is faulty, replace it with a new one and calibrate it according to the manufacturer's specifications.
  5. Clear the DTC and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1122 1996 Honda Civic

The typical repair costs for a P1122 code on a 1996 Honda Civic can range from $100 to $300, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check local rates for a more precise estimate. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less.

What does this mean?

Tech Notes for P1122 1996 Honda Civic

You can try to clean the throttle body but in many case the throttle body will have to be replaced.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1122 1996 Honda Civic Code

1. What are the common symptoms of OBDII code P1122 on a 1996 Honda Civic?

- Common symptoms include poor acceleration, rough idling, stalling, and possibly the vehicle going into "limp mode" where it operates with reduced power.

2. What does the OBDII code P1122 "Throttle Position Sensor Signal Higher Than Expected" mean on a 1996 Honda Civic?

- This code indicates that the Engine Control Module (ECM) has detected a higher than expected signal from the throttle position sensor, suggesting a potential issue with the sensor or its circuit.

3. What are the possible causes of OBDII code P1122 on a 1996 Honda Civic?

- The possible causes include a faulty throttle position sensor, a damaged wiring harness, a poor electrical connection, or a problem with the ECM itself.

4. How can I diagnose the OBDII code P1122 on my 1996 Honda Civic?

- Diagnosing this code involves checking the throttle position sensor readings using a multimeter, inspecting the sensor and its wiring for any visible damage, and testing the sensor's voltage output.

5. Can I still drive my 1996 Honda Civic with OBDII code P1122?

- It is not recommended to drive the vehicle with this code present, as it can lead to further damage and potential safety hazards. It is best to address the issue promptly.

6. How do I repair OBDII code P1122 on a 1996 Honda Civic?

- The repair typically involves replacing the throttle position sensor if it is found to be faulty, repairing any damaged wiring or connections, and clearing the code with a scan tool.

7. Is it possible to reset OBDII code P1122 on a 1996 Honda Civic without fixing the issue?

- While you can clear the code temporarily with a scan tool, it will likely reappear if the underlying issue is not addressed. It is essential to diagnose and repair the problem to prevent further issues.

8. Can a dirty throttle body cause OBDII code P1122 on a 1996 Honda Civic?

- While a dirty throttle body can cause performance issues, it is unlikely to trigger this specific code. Focus on checking the throttle position sensor and related components first.

9. How much does it typically cost to repair OBDII code P1122 on a 1996 Honda Civic?

- The cost of repair can vary depending on the extent of the issue and whether you perform the repair yourself or take it to a mechanic. Replacement throttle position sensors can range from $50 to $150.

10. Will OBDII code P1122 cause my 1996 Honda Civic to fail an emissions test?

- Yes, if this code is present, it may cause your vehicle to fail an emissions test as it indicates a problem with the throttle position sensor signal, which can impact engine performance and emissions control.

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