P0732 2018 Chevrolet Silverado Code - Transmission 2nd Gear Ratio Incorrect
Quick Answer
The transmission turbine speed sensor and vehicle speed sensor are hall-effect sensors. Common causes include Low transmission fluid level, Shift solenoid mechanical fault, Faulty Turbine Sensor. 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
- P0732 2018 Chevrolet Silverado indicates Transmission 2nd Gear Ratio Incorrect.
- Common causes
- Common causes include Low transmission fluid level, Shift solenoid mechanical fault, Faulty Turbine Sensor.
- 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 P0732 2018 Chevrolet Silverado Description
The TCM provides a 9 V reference circuit and a signal circuit to each of the sensors. As the 1-2-3-4-5-6 clutch piston housing and transmission output shaft or transfer case output rotates, the sensors produce a signal frequency based on the teeth on the reluctor wheel. The TCM calculates the transmission gear ratio based on the speed sensor signals and compares the calculated gear ratio to the commanded gear ratio.
The Diagnostic Trouble Code (DTC) will be set when the TCM detects the calculated gear ratio with 2nd gear commanded differs from the known 6th gear ratio for 2 s.
What are the Possible Causes of the DTC P0732 2018 Chevrolet Silverado?
- Low transmission fluid level
- Shift solenoid mechanical fault
- Faulty Turbine Sensor
- Faulty Output Speed Sensor
How to Fix the DTC P0732 2018 Chevrolet Silverado?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0732 2018 Chevrolet Silverado 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 P0732 2018 Chevrolet Silverado Code
1. What does the OBD-II code P0732 mean on a 2018 Chevrolet Silverado?
The P0732 code indicates that the transmission's control module has detected an incorrect gear ratio in 2nd gear, suggesting a potential issue with the transmission or its related components.
2. What are the common symptoms of the P0732 code in a 2018 Chevrolet Silverado?
Symptoms may include poor acceleration, slipping in 2nd gear, harsh shifting, decreased fuel efficiency, or the transmission staying in limp mode.
3. What causes the P0732 code to appear on my Silverado?
Common causes include low transmission fluid, a faulty shift solenoid, worn clutch packs, a damaged transmission band, or issues with the torque converter.
4. Can low transmission fluid cause the P0732 code?
Yes, insufficient or contaminated transmission fluid can lead to improper hydraulic pressure, affecting gear ratios and triggering the P0732 code.
5. How can I diagnose the P0732 code on my 2018 Chevrolet Silverado?
Start by checking the transmission fluid level and condition, then inspect for damaged wiring or connectors, and test the operation of shift solenoids and clutch components.
6. Is it safe to drive my Silverado with the P0732 code?
Driving with this code can cause further damage to the transmission, so it is recommended to address the issue as soon as possible.
7. How much does it cost to fix the P0732 code on a 2018 Chevrolet Silverado?
Repair costs vary depending on the cause, ranging from $100 to replace a shift solenoid to several thousand dollars for a full transmission rebuild or replacement.
8. Can a software issue cause the P0732 code?
Yes, outdated or corrupted transmission control module (TCM) software can sometimes cause this code and may require a reprogramming or update.
9. What tools do I need to troubleshoot the P0732 code?
You’ll need an OBD-II scanner, a multimeter for electrical testing, and tools to inspect and potentially replace transmission components.
10. Can I fix the P0732 code on my own?
If the issue is minor, like low or dirty transmission fluid, you can fix it yourself. However, more complex problems, such as internal transmission damage, may require professional repair.
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