P1740 Code - Torque Converter Clutch or Overdrive Solenoid Performance Condition
Quick Answer
Torque Converter Clutch (TCC) and Overdrive (OD) clutch are tested when the Powertrain Control Module (PCM) requests TCC engagement in 3rd gear and Overdrive. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Torque Converter Clutch (TCC) and Overdrive (OD) Solenoid. 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
- P1740 indicates Torque Converter Clutch or Overdrive Solenoid Performance Condition.
- Common causes
- Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Torque Converter Clutch (TCC) and Overdrive (OD) Solenoid.
- 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 P1740 Description
What are the Possible Causes of the DTC P1740?
- Low transmission fluid level
- Dirty transmission fluid
- Faulty Torque Converter Clutch (TCC) and Overdrive (OD) Solenoid
- Torque Converter Clutch (TCC) and Overdrive (OD) Solenoid harness is open or shorted
- Torque Converter Clutch (TCC) and Overdrive (OD) Solenoid circuit poor electrical connection
How to Fix the DTC P1740?
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 P1740 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 P1740 code?
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Get the P1740 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- P1740 Acura — 4th Clutch Pressure Switch Circuit
- P1740 Audi — Clutch Temperature Monitoring
- P1740 Buick — Torque Control Circuit Conditions
- P1740 Cadillac — Torque Control Circuit Conditions
- P1740 Chevrolet — Torque Control Circuit Conditions
- P1740 Dodge — Torque Converter Clutch or Overdrive Solenoid Performance Condition
- P1740 Ford — Transmission System Conditions
- P1740 GMC — Torque Control Circuit Conditions
- P1740 Honda — 4th Clutch Pressure Switch Circuit
- P1740 Hyundai — Position1 Short To Ground
- P1740 Infiniti — Lock-up Select Solenoid Valve Circuit
- P1740 Mazda — Torque Converter Clutch Control
- P1740 Mercedes-Benz — Engine Control Module Load Signal Plausibility
- P1740 Nissan — Lock-up Select Solenoid Valve Circuit
- P1740 Volkswagen — Clutch Temperature Monitoring
Frequently Asked Questions about P1740 Code
1. What are the common symptoms of OBDII code P1740?
The common symptoms of OBDII code P1740 include erratic shifting, transmission slippage, decreased fuel efficiency, and illumination of the Check Engine Light.
2. What are the possible causes of OBDII code P1740?
Possible causes of OBDII code P1740 include a faulty torque converter clutch solenoid, issues with the overdrive solenoid, low transmission fluid levels, or a damaged torque converter.
3. How serious is OBDII code P1740?
OBDII code P1740 can lead to poor transmission performance and reduced fuel efficiency if left unresolved. It is recommended to address this issue promptly to prevent further damage to the transmission system.
4. Can I continue driving with OBDII code P1740?
It is not recommended to continue driving with OBDII code P1740 as it can result in further damage to the transmission components. It is advisable to have the issue diagnosed and repaired by a qualified mechanic.
5. How is OBDII code P1740 diagnosed?
Diagnosing OBDII code P1740 typically involves using a diagnostic scanner to retrieve the trouble codes, performing a visual inspection of the transmission components, and conducting tests to identify the root cause of the issue.
6. How is OBDII code P1740 typically repaired?
Repairing OBDII code P1740 may involve replacing the torque converter clutch solenoid, overdrive solenoid, or addressing any other underlying transmission issues. It is recommended to follow the manufacturer's repair guidelines.
7. Can a DIY enthusiast fix OBDII code P1740 at home?
While some experienced DIY enthusiasts may be able to address OBDII code P1740 at home, it is generally recommended to have this issue diagnosed and repaired by a professional mechanic due to the complexity of transmission systems.
8. How much does it cost to repair OBDII code P1740?
The cost of repairing OBDII code P1740 can vary depending on the specific cause of the issue, the extent of the damage, and the labor rates in your area. It is advisable to obtain quotes from different repair shops for an accurate estimate.
9. How can I prevent OBDII code P1740 from occurring?
To prevent OBDII code P1740, it is essential to maintain regular transmission fluid changes, address any transmission issues promptly, and follow the manufacturer's recommended maintenance schedule for your vehicle.
10. Will resetting the Check Engine Light resolve OBDII code P1740?
Simply resetting the Check Engine Light without addressing the underlying issue causing OBDII code P1740 will not resolve the problem. It is crucial to diagnose the root cause of the code and perform the necessary repairs to prevent further complications.
Discuss the causes and fixes for P1740 OBDII Code
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i have 2011 nissan juke awd and this codes comes up P 1740. more recently the timing belt was replaced. the an oil issue occurred and they replaced some other part and charged me telling me in the event the part fails i would be covered. Sounds fishy and the Nissan dealer did not identify what they did.
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If the "Oil Issue" is on the transmission, then the P1740 code is related to the operation, otherwise is a different problem.
P1740 NISSAN - Lock-up Select Solenoid Valve Circuit
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