P1790 Honda 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 Honda 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 Honda Description
What are the Possible Causes of the DTC P1790 Honda?
- 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 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 P1790 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.
Need more information about the P1790 Honda code?
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Need Help with the Code?
Get the P1790 Honda code diagnosed by a professional: Find a repair shop in your area
Information for Specific Honda Models
- P1790 1996 Honda Civic — Throttle Position Sensor Circuit Malfunction
- P1790 1997 Honda Civic — Throttle Position Sensor Circuit Malfunction
- P1790 1998 Honda Civic — Throttle Position Sensor Circuit Malfunction
- P1790 1999 Honda Civic — Throttle Position Sensor Circuit Malfunction
- P1790 2000 Honda Civic — Throttle Position Sensor Circuit Malfunction
Frequently Asked Questions about P1790 Honda Code
1. What are the common symptoms of OBDII code P1790 on a Honda related to Throttle Position Sensor Circuit Malfunction?
- Common symptoms include poor engine performance, rough idling, stalling, and difficulty accelerating.
2. What are the possible causes of the Throttle Position Sensor Circuit Malfunction in a Honda triggering code P1790?
- Possible causes include a faulty throttle position sensor, damaged wiring or connectors in the TPS circuit, or a problem with the throttle body assembly.
3. How can I diagnose the Throttle Position Sensor Circuit Malfunction causing OBDII code P1790 on my Honda?
- Diagnose the issue by performing a visual inspection of the TPS wiring, testing the throttle position sensor with a multimeter, and checking for any loose connections or corrosion.
4. Can driving with the OBDII code P1790 related to Throttle Position Sensor Circuit Malfunction harm my Honda?
- Continuing to drive with this issue can potentially lead to poor fuel economy, further engine damage, and eventual stalling or loss of power while driving.
5. What are some repair tips for fixing the Throttle Position Sensor Circuit Malfunction in a Honda triggering code P1790?
- Repair tips include replacing the faulty throttle position sensor, repairing or replacing damaged wiring, cleaning connectors, and ensuring proper installation of components.
6. Is it safe to reset the OBDII code P1790 related to Throttle Position Sensor Circuit Malfunction in my Honda without fixing the underlying issue?
- While you can reset the code, it is not recommended as the problem will persist, potentially leading to further issues and impacting the vehicle's performance.
7. How can I prevent the recurrence of OBDII code P1790 in my Honda due to Throttle Position Sensor Circuit Malfunction?
- Regularly inspect and maintain the throttle position sensor, wiring, and connectors, follow proper driving habits, and address any engine performance issues promptly.
8. Can a DIY enthusiast repair the Throttle Position Sensor Circuit Malfunction causing code P1790 in a Honda?
- Depending on the DIY enthusiast's skill level and access to tools, repairing this issue may be possible by following detailed repair guides and being cautious with electrical components.
9. Will replacing the throttle position sensor resolve the OBDII code P1790 issue in my Honda?
- In many cases, replacing the throttle position sensor can effectively resolve the Throttle Position Sensor Circuit Malfunction triggering code P1790, restoring proper engine performance.
10. How long does it typically take to repair the Throttle Position Sensor Circuit Malfunction causing OBDII code P1790 in a Honda?
- The repair time can vary based on experience level and access to tools but typically ranges from 1-3 hours for DIY repairs or longer if seeking professional assistance.
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