P1786 Code - Transmission System Second or Third Gear Fault
Quick Answer
P1786 indicates Transmission System Second or Third Gear Fault. Common causes include Check for transmission mechanical problem. 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
- P1786 indicates Transmission System Second or Third Gear Fault.
- Common causes
- Common causes include Check for transmission mechanical problem.
- 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 P1786 Description
What are the Possible Causes of the DTC P1786?
- Check for transmission mechanical problem
How to Fix the DTC P1786?
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 P1786 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 P1786 code?
Need more information on how to fix the P1786 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1786 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- P1786 Acura — Automatic Transmission Poor Gear Shift
- P1786 Ford — Transmission System Second or Third Gear Fault
- P1786 Honda — Automatic Transmission Poor Gear Shift
- P1786 Hyundai — Engine RPM Output Circuit Malfunction
- P1786 Isuzu — Automatic Transmission Poor Gear Shift
Frequently Asked Questions about P1786 Code
1. What are the common symptoms of OBDII code P1786 (Transmission System Second or Third Gear Fault)?
- Common symptoms include harsh shifting between second and third gear, slippage in these gears, and potential transmission overheating.
2. What are the possible causes of OBDII code P1786?
- Potential causes of this code include low transmission fluid levels, a faulty transmission solenoid, a malfunctioning transmission valve body, or internal transmission issues.
3. How serious is OBDII code P1786?
- This code should be addressed promptly to prevent further damage to the transmission. Continuing to drive with this fault may lead to more severe transmission problems and potential vehicle breakdowns.
4. Can I drive my vehicle with OBDII code P1786?
- It is not recommended to drive the vehicle with this fault as it can cause further damage to the transmission. It's best to have the issue diagnosed and repaired as soon as possible.
5. How can I diagnose OBDII code P1786?
- Diagnosis typically involves using a scan tool to retrieve the code, checking the transmission fluid level and condition, and inspecting the transmission components for any visible damage or wear.
6. What are some repair tips for OBDII code P1786?
- Repair tips may include checking and topping up the transmission fluid, testing and replacing the transmission solenoid, inspecting and cleaning the transmission valve body, or seeking professional help for internal transmission repairs.
7. How much does it cost to fix OBDII code P1786?
- The cost of fixing this code can vary depending on the underlying cause and the extent of the repairs needed. It is advisable to consult a professional mechanic for an accurate diagnosis and cost estimate.
8. Can OBDII code P1786 be reset without fixing the underlying issue?
- While the code can be cleared using a scan tool, it is not recommended to reset it without addressing the underlying problem. The fault will likely reoccur, and driving with the issue unresolved can lead to more significant transmission damage.
9. Are there any preventive measures to avoid OBDII code P1786?
- Maintaining regular transmission fluid changes, following the manufacturer's recommended service intervals, and addressing any transmission issues promptly can help prevent the occurrence of this fault.
10. Is OBDII code P1786 specific to certain vehicle makes and models?
- This code can be found in various vehicle makes and models equipped with OBDII systems, particularly those with automatic transmissions.
Discuss the causes and fixes for P1786 OBDII Code
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mini cooper 2008 with cvt transmission would not shift from first gear
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