P1873 GMC Code - Torque Converter Clutch Stator Temperature Switch Circuit Low
Quick Answer
The P1873 code for GMC vehicles indicates an issue with the Torque Converter Clutch (TCC) Stator Temperature Switch Circuit being lower than expected. Common causes include Faulty Torque Converter Clutch Stator Temperature Switch, Wiring or connection issues in the circuit, Low transmission fluid level or poor quality fluid. 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
- P1873 GMC indicates Torque Converter Clutch Stator Temperature Switch Circuit Low.
- Common causes
- Common causes include Faulty Torque Converter Clutch Stator Temperature Switch, Wiring or connection issues in the circuit, Low transmission fluid level or poor quality fluid.
- 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.
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Code P1873 GMC Description
The P1873 code for GMC vehicles indicates an issue with the Torque Converter Clutch (TCC) Stator Temperature Switch Circuit being lower than expected. The torque converter clutch is a critical component in automatic transmissions, responsible for connecting the engine to the transmission in a direct manner to improve fuel efficiency and reduce heat generation. The stator temperature switch plays a role in monitoring the temperature of the torque converter clutch stator, which helps regulate the operation of the TCC.
Common Causes of P1873 GMC
- Faulty Torque Converter Clutch Stator Temperature Switch
- Wiring or connection issues in the circuit
- Low transmission fluid level or poor quality fluid
- Mechanical damage to the torque converter or transmission components
- PCM (Powertrain Control Module) software or hardware issues
Symptoms of P1873 GMC
- Poor fuel economy
- Harsh or erratic shifting
- Engine revving higher than usual
- Lack of power delivery
- Illumination of the Check Engine Light
How to Fix P1873 GMC
- Begin by using a diagnostic scanner to read the code and identify the specific issue with the torque converter clutch stator temperature switch circuit.
- Inspect the wiring and connections related to the circuit for any damage or corrosion. Repair or replace as needed.
- Check the transmission fluid level and quality. Top up or change the fluid if necessary.
- Test the torque converter clutch stator temperature switch for proper functionality. Replace if faulty.
- Clear the error code and test drive the vehicle to ensure that the issue has been resolved.
Cost to Fix P1873 GMC
The cost of repairing a P1873 code can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. In general, replacing a faulty torque converter clutch stator temperature switch or repairing wiring issues may range from $200 to $500, including parts and labor. However, additional costs may apply if there are underlying transmission problems that need to be addressed. It's recommended to consult with a professional mechanic for a more accurate estimate based on your vehicle's make and model.
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Frequently Asked Questions about P1873 GMC Code
1. What does the OBDII code P1873 mean on a GMC vehicle?
P1873 indicates an issue with the Torque Converter Clutch Stator Temperature Switch Circuit, specifically a low voltage or signal problem.
2. What are the common symptoms of code P1873 on a GMC?
Symptoms may include transmission overheating, poor fuel economy, erratic shifting, or the Check Engine Light turning on.
3. What causes code P1873 in GMC vehicles?
Common causes include a faulty temperature switch, damaged wiring or connectors, a short circuit, or issues with the transmission control module (TCM).
4. Can I drive my GMC with code P1873 active?
While the vehicle may still be drivable, prolonged operation with this code can lead to transmission damage or efficiency issues. It is best to address the problem promptly.
5. How do I diagnose code P1873 on my GMC?
Diagnosis typically involves inspecting the temperature switch, checking wiring and connectors for damage, and testing the transmission control module for faults.
6. What repairs are needed to fix code P1873?
Repairs may include replacing the temperature switch, repairing or replacing wiring, or addressing issues with the transmission control module.
7. How much does it cost to fix code P1873 on a GMC?
Repair costs vary depending on the specific issue but can range from $100 for simple wiring fixes to over $500 if the temperature switch or TCM needs replacement.
8. Can a dirty transmission fluid cause code P1873?
Yes, contaminated or low transmission fluid can affect temperature readings and cause the code to trigger.
9. How can I prevent code P1873 from happening again?
Regular transmission maintenance, including fluid changes and inspections, can help prevent issues related to the torque converter clutch stator temperature switch.
10. Is code P1873 specific to GMC vehicles?
No, while the code is commonly seen in GMC vehicles, it can also appear in other makes and models with similar transmission systems.
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