P1794 Acura Code - Automatic Transmission BARO Signal
Quick Answer
P1794 Acura indicates Automatic Transmission BARO Signal. Common causes include Faulty Transmission Control Module (TCM), Faulty Engine Control Module (ECM), Transmission Control Module (TCM) harness is open or shorted. 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
- P1794 Acura indicates Automatic Transmission BARO Signal.
- Common causes
- Common causes include Faulty Transmission Control Module (TCM), Faulty Engine Control Module (ECM), Transmission Control Module (TCM) harness is open or shorted.
- 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 P1794 Acura Description
What are the Possible Causes of the DTC P1794 Acura?
- Faulty Transmission Control Module (TCM)
- Faulty Engine Control Module (ECM)
- Transmission Control Module (TCM) harness is open or shorted
- Transmission Control Module (TCM) circuit poor electrical connection
How to Fix the DTC P1794 Acura?
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 P1794 Acura 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 P1794 Acura Code
1. What does the OBDII code P1794 mean for an Acura?
P1794 indicates an issue with the Automatic Transmission BARO Signal, which relates to the vehicle's barometric pressure sensor providing incorrect or inconsistent data to the transmission control module.
2. What are the common symptoms of code P1794 on an Acura?
Symptoms may include erratic shifting, reduced fuel efficiency, transmission slipping, or the check engine light being illuminated.
3. What causes the P1794 code to appear on an Acura?
Common causes include a faulty barometric pressure sensor, damaged wiring or connectors, or a malfunction in the transmission control module.
4. Can I drive my Acura with a P1794 code?
While the car may still be drivable, ignoring the code can lead to worsening transmission performance and potential long-term damage.
5. How do I diagnose the P1794 code on an Acura?
Diagnosis typically involves checking the barometric pressure sensor, inspecting wiring and connectors for damage, and verifying sensor output using diagnostic tools.
6. How do I fix the P1794 code on an Acura?
Repairs may include replacing the barometric pressure sensor, repairing damaged wiring or connectors, or reprogramming the transmission control module if necessary.
7. Is a P1794 code specific to Acura vehicles?
No, the P1794 code can appear on other vehicles as well, but the diagnosis and repair process may vary depending on the make and model.
8. How much does it cost to repair the P1794 code on an Acura?
Costs can range from $100 to $300 for sensor replacement, with additional costs for wiring repairs or module reprogramming depending on the issue.
9. Can a faulty barometric pressure sensor affect the transmission?
Yes, inaccurate BARO readings can disrupt transmission operation by providing incorrect environmental data to the control module.
10. Do I need special tools to fix the P1794 code on an Acura?
Yes, diagnostic tools such as an OBDII scanner and a multimeter are often required to accurately identify and resolve the issue.
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