P1790 1996 Honda Civic Code - Throttle Position Sensor Circuit Malfunction
Quick Answer
The Engine Control Module (ECM) monitors the Throttle Position (TP) Sensor. Common causes include Faulty Throttle Position (TP) Sensor, Throttle Position Sensor harness is open or shorted, Throttle Position Sensor 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
- P1790 1996 Honda Civic indicates Throttle Position Sensor Circuit Malfunction.
- Common causes
- Common causes include Faulty Throttle Position (TP) Sensor, Throttle Position Sensor harness is open or shorted, Throttle Position Sensor 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 P1790 1996 Honda Civic Description
What are the Possible Causes of the DTC P1790 1996 Honda Civic?
- Faulty Throttle Position (TP) Sensor
- Throttle Position Sensor harness is open or shorted
- Throttle Position Sensor circuit poor electrical connection
How to Fix the DTC P1790 1996 Honda Civic?
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 P1790 1996 Honda Civic 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 P1790 1996 Honda Civic Code
1. What does the OBDII code P1790 mean on a 1996 Honda Civic?
P1790 indicates a Throttle Position Sensor (TPS) Circuit Malfunction, meaning the ECU has detected an issue with the signal from the TPS.
2. What are the common symptoms of a P1790 code in a 1996 Honda Civic?
Symptoms may include erratic acceleration, poor engine performance, difficulty shifting (if automatic), and possibly an illuminated check engine light.
3. What causes the P1790 code to appear on a 1996 Honda Civic?
Common causes include a faulty throttle position sensor, damaged wiring or connectors, or an issue with the ECU interpreting the TPS signal.
4. How do I diagnose the P1790 code on my 1996 Honda Civic?
Start by inspecting the TPS and its wiring for damage, test the sensor with a multimeter, and check for proper voltage and continuity in the circuit.
5. Can I drive my 1996 Honda Civic with a P1790 code?
While the car may still be drivable, you should address the issue promptly to avoid further damage, poor performance, or unsafe driving conditions.
6. How do I fix the P1790 code on a 1996 Honda Civic?
Repairs may include replacing the throttle position sensor, repairing or replacing damaged wiring, or recalibrating the ECU if necessary.
7. How much does it cost to fix a P1790 code on a 1996 Honda Civic?
The cost can range from $50 to $200 for a new TPS, plus labor costs if you're not performing the repair yourself.
8. Can a dirty throttle body cause the P1790 code?
Yes, a dirty throttle body may cause inconsistent readings from the TPS, potentially triggering the P1790 code.
9. Will resetting the ECU clear the P1790 code permanently?
Resetting the ECU may temporarily clear the code, but the issue will return unless the underlying problem is resolved.
10. How can I prevent the P1790 code from recurring in my 1996 Honda Civic?
Regularly inspect and maintain the throttle body and TPS, and ensure wiring connections are secure and free from corrosion.
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