P0794 Code - Intermediate Shaft Speed Sensor 'A' Circuit Intermittent
Quick Answer
This sensor detects the rotation speed of the input turbine. Common causes include Faulty Intermediate Shat Speed Sensor 'A', Intermediate Shat Speed Sensor 'A' harness is open or shorted, Intermediate Shat Speed Sensor 'A' 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
- P0794 indicates Intermediate Shaft Speed Sensor 'A' Circuit Intermittent.
- Common causes
- Common causes include Faulty Intermediate Shat Speed Sensor 'A', Intermediate Shat Speed Sensor 'A' harness is open or shorted, Intermediate Shat Speed Sensor 'A' 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 P0794 Description
What are the Possible Causes of the DTC P0794?
- Faulty Intermediate Shat Speed Sensor 'A'
- Intermediate Shat Speed Sensor 'A' harness is open or shorted
- Intermediate Shat Speed Sensor 'A' circuit poor electrical connection
How to Fix the DTC P0794?
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 P0794 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 P0794 code?
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Need Help with the Code?
Get the P0794 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- P0794 Mazda — Intermediate Shaft Speed Sensor 'A' Circuit Intermittent
Frequently Asked Questions about P0794 Code
1. What are the common symptoms of OBDII code P0794?
The common symptoms of OBDII code P0794 include intermittent or complete loss of transmission shifting, erratic or harsh shifting, and the transmission going into limp mode.
2. What causes OBDII code P0794 to trigger?
OBDII code P0794 is typically triggered by a faulty intermediate shaft speed sensor or issues with the sensor circuit, such as wiring problems, loose connections, or sensor malfunctions.
3. How can I diagnose the cause of OBDII code P0794?
Diagnosing OBDII code P0794 involves using a scan tool to retrieve the code, inspecting the intermediate shaft speed sensor and its wiring for damage, testing the sensor's resistance, and checking for proper voltage and ground connections.
4. Can a DIYer repair OBDII code P0794 at home?
Repairing OBDII code P0794 at home is possible for those with automotive repair experience. Replacing the intermediate shaft speed sensor, repairing wiring or connections, and clearing the code with a scan tool are typical steps involved in fixing this issue.
5. What are the repair options for OBDII code P0794?
Repair options for OBDII code P0794 include replacing the faulty intermediate shaft speed sensor, repairing any damaged wiring or connectors, ensuring proper sensor installation, and clearing the trouble code to reset the system.
6. Is it safe to continue driving with OBDII code P0794 present?
It is not recommended to continue driving with OBDII code P0794 present, as it can lead to further transmission issues and potential safety hazards. It is best to address the problem promptly to prevent more severe damage.
7. Can weather or road conditions affect OBDII code P0794?
Extreme weather conditions or rough road conditions can potentially impact the performance of the intermediate shaft speed sensor and trigger OBDII code P0794. Ensuring the sensor is properly shielded and protected can help prevent such issues.
8. How long does it typically take to repair OBDII code P0794?
The repair time for OBDII code P0794 can vary depending on the extent of the issue and the repairer's experience. In general, it may take a few hours to a day to diagnose, repair, and clear the trouble code associated with this problem.
9. Are there any preventive measures to avoid OBDII code P0794 in the future?
Regular maintenance of the transmission system, including checking the condition of sensors and wiring, can help prevent OBDII code P0794 from occurring. Ensuring timely repairs of any transmission-related issues can also reduce the likelihood of this code appearing.
10. Can OBDII code P0794 be a recurring issue even after repair?
If the root cause of OBDII code P0794 is not properly addressed during the repair process, it can potentially recur. It is essential to diagnose the issue accurately, use quality replacement parts, and follow proper repair procedures to minimize the chances of the problem resurfacing.
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