Engine-CodesGeneric – P0762

P0762 Code - Shift Solenoid 'C' Stuck On

Quick Answer

The diagnostic trouble code P0762 indicates that the shift solenoid 'C' is stuck on in the transmission. Common causes include Malfunctioning shift solenoid 'C', Electrical issues such as a short circuit or faulty wiring connection, Low transmission fluid levels. 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
P0762 indicates Shift Solenoid 'C' Stuck On.
Common causes
Common causes include Malfunctioning shift solenoid 'C', Electrical issues such as a short circuit or faulty wiring connection, Low transmission fluid levels.
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.
Table of contents Created and updated by William Orellana on Sep 08, 2024
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Code P0762 Description

The diagnostic trouble code P0762 indicates that the shift solenoid 'C' is stuck on in the transmission. The shift solenoids play a crucial role in controlling the flow of transmission fluid and determining the gear ratios in an automatic transmission. When the shift solenoid 'C' is stuck on, it means that the transmission is unable to properly shift gears, leading to various performance issues.

OBDII Code P0762 - Shift Solenoid 'C' Stuck On
P0762 Code - Shift Solenoid 'C' Stuck On

Common Causes of P0762

  1. Malfunctioning shift solenoid 'C'
  2. Electrical issues such as a short circuit or faulty wiring connection
  3. Low transmission fluid levels
  4. Dirty transmission fluid
  5. Internal transmission damage

Symptoms of P0762

  1. Harsh or delayed shifting
  2. Transmission slipping
  3. Decreased fuel efficiency
  4. Transmission getting stuck in a single gear
  5. Illumination of the check engine light

How to Fix P0762

  1. Conduct a diagnosis with a scan tool to confirm the P0762 code and identify the specific issue with the shift solenoid 'C'.
  2. Inspect the wiring harness and connections to ensure there are no electrical issues causing the shift solenoid to remain stuck on.
  3. Check the transmission fluid level and condition, topping up or replacing it if necessary.
  4. If the shift solenoid 'C' is found to be faulty, replace it with a new one following the manufacturer's guidelines.
  5. Clear the diagnostic trouble codes and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P0762

The typical repair costs for addressing a shift solenoid 'C' stuck on issue can range from $200 to $500, including parts and labor. However, it's important to note that the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check local rates for a more accurate estimate.

Tech Notes for P0762

When the transmission solenoid is stuck off, in most cases the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. If the transmission fluid is very dirty, it is recommended to change the transmission fluid and if possible, remove the transmission pan for further diagnosis. Excessive debris or metal particles on the transmission pan could be an indication that there is a transmission mechanical failure, and that the transmission will need to be rebuilt or replaced.





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When is the Code Detected?

The P0762 code is detected when the gear required by the ECM does not match the actual gear when vehicle is driven.

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Code P0762 Information for Specific Makes

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0762 Code

1. What does OBDII code P0762 Shift Solenoid 'C' Stuck On mean?

The P0762 code indicates that the transmission control module has detected a problem with shift solenoid 'C' being stuck in the on position.

2. What are the common symptoms of a Shift Solenoid 'C' Stuck On issue?

Common symptoms include harsh shifting, delayed or erratic shifting, transmission slipping, decreased fuel efficiency, and the transmission being stuck in one gear.

3. What are the possible causes of the P0762 code?

Possible causes include a faulty shift solenoid 'C', low transmission fluid levels, dirty or contaminated transmission fluid, wiring issues, or a malfunctioning transmission control module.

4. How can I diagnose a Shift Solenoid 'C' Stuck On problem?

Diagnosis typically involves using a scan tool to read the OBDII code, checking the transmission fluid level and condition, inspecting the shift solenoid 'C' and its wiring for any damage, and performing a thorough transmission system inspection.

5. Can I continue to drive my vehicle with the P0762 code?

It is not recommended to continue driving with the P0762 code present, as it can lead to further damage to the transmission and potentially unsafe driving conditions.

6. How is a Shift Solenoid 'C' Stuck On issue typically repaired?

Repairing the issue often involves replacing the faulty shift solenoid 'C', addressing any transmission fluid issues, repairing damaged wiring, or reprogramming the transmission control module.

7. Are there any DIY tips for fixing a Shift Solenoid 'C' Stuck On problem?

While some basic checks like inspecting fluid levels and wiring can be done by DIY enthusiasts, diagnosing and repairing the issue often requires specialized tools and expertise best handled by a qualified mechanic.

8. Will resetting the check engine light make the P0762 code go away?

Resetting the check engine light may temporarily turn it off, but the underlying issue causing the P0762 code will still need to be diagnosed and repaired to prevent it from reoccurring.

9. Can a Shift Solenoid 'C' Stuck On problem cause other transmission issues?

Yes, if left unresolved, a shift solenoid 'C' issue can lead to more severe transmission problems, including transmission failure and potential safety hazards while driving.

10. How much does it typically cost to repair a Shift Solenoid 'C' Stuck On issue?

The cost of repairs can vary depending on the extent of the issue, the parts needed, and the labor rates of the repair shop. It's advisable to get a diagnostic inspection to determine the exact cause and cost of repair.

Discuss the causes and fixes for P0762 OBDII Code

  • Solenoid C gets a bad rap, in that it almost never fails. This solenoid only supplies pressure to operate the reverse clutch & the direct clutch (3-4 clutch). If the solenoid is defective then neither reverse or 3rd & 4th gear will operate properly, but 1st & 2nd gear will operate fine . Fluid passages in the valve body or the side plate (located on the driver's side of the Mazda 3 Trans (Mazda P.N. FN4A-El) could be blocked & both can be accessed without dropping the trans. If the error code happens only in reverse or when shifting to 3rd gear, the problem is in the respective clutch or a clogged fluid path. The problem is almost invariably the respective clutch piston. I normally replace the respective clutch, which can be done without dropping the trans. Loosening trans bolts, mounts & motor mounts will allow enough room to replace either the direct or reverse clutch (located directly behind the side plate.. Given an accurate description of any Mazda trans problem, I can pin point the problem. Failure of metal parts is rare & a whole different problem. You may clear any error code by briefly removing the positive battery terminal.