Quick Answer
C0735 means: DTC C0735 indicates a malfunction with the transmission range sensor or TCM.
Can I drive with C0735? You should address this issue as soon as possible to avoid transmission damage.
Common Questions
What does C0735 mean and how does it affect my car?
DTC C0735 signifies a malfunction in the transmission range sensor, which can lead to shifting problems and overall poor performance. If not resolved, it can cause severe transmission issues, making it essential to address promptly.
What are the most common causes of C0735 and how much does it cost to fix?
Common causes include a faulty transmission range sensor and wiring issues, with repair costs ranging from $100 to $800 depending on the specific problem and required repairs.
Can I drive my car with C0735 or should I stop immediately?
Driving with C0735 is not advisable, as it can lead to erratic shifting and potential transmission damage. It’s best to address the issue promptly to ensure safety and avoid further costly repairs.
How can I diagnose C0735 myself using GeekOBD APP?
Use the GeekOBD APP to scan for codes and retrieve freeze frame data for a clearer picture of the issue. Follow the diagnostic steps outlined to perform a thorough check of the transmission range sensor and related components.
What vehicles are most commonly affected by C0735?
DTC C0735 is frequently seen in 2015-2020 Chevrolet Silverado and GMC Sierra models, as well as other GM vehicles during this period. It’s beneficial to check for any recalls or technical service bulletins related to transmission issues.
How can I prevent C0735 from happening again?
Regular maintenance, including transmission fluid changes and electrical system checks, can help prevent issues related to the transmission range sensor. Additionally, inspecting wiring for wear and tear can be beneficial.
What is C0735?
DTC C0735 is a diagnostic trouble code that indicates a problem with the transmission range sensor or the transmission control module (TCM) in certain vehicles, particularly those made by General Motors. This code typically signifies that the TCM has detected an inconsistency in the signal from the transmission range sensor, which can lead to improper shifting or even prevent the vehicle from starting. The range sensor is critical as it informs the TCM of the current gear selection. If it fails, it can cause erratic shifting, loss of power while driving, or the inability to shift gears altogether. In real-world terms, if you're experiencing issues with your vehicle's transmission, such as difficulty changing gears or a check engine light that won’t turn off, C0735 may be the culprit. Driving with this code can lead to increased wear on your transmission or potentially leave you stranded if the vehicle cannot shift into gear. Overall, understanding C0735 is key for maintaining vehicle performance and ensuring safe driving conditions.
System: C - Chassis (ABS, Steering, Suspension)
Symptoms
Common symptoms when C0735 is present:
- Check engine light stays on constantly, indicating a persistent issue with the transmission system.
- Engine hesitates during acceleration or has difficulty shifting gears, creating a jerking sensation when driving.
- Fuel economy decreased by 10-15%, as the vehicle struggles to maintain optimal performance.
- Transmission might slip unexpectedly, leading to a lack of power or abrupt loss of acceleration.
- Difficulty starting the vehicle, which could be related to an inability to detect the correct gear position.
Possible Causes
Most common causes of C0735 (ordered by frequency):
- The most common cause of C0735 is a faulty transmission range sensor, with about 60% likelihood. This sensor may wear out over time due to heat and vibration.
- The second most common cause is wiring issues, such as frayed or damaged wires leading to the sensor. This can often be diagnosed visually.
- Thirdly, a malfunctioning transmission control module (TCM) can trigger this code, which may require a software update or replacement to resolve.
- Less common but serious causes include internal transmission failure, which could result in costly repairs if not addressed promptly.
- A rare cause could be a software glitch in the vehicle's onboard computer, which may require reprogramming to fix.
C0735 Repair Costs
Cost Breakdown by Repair Type
Transmission Range Sensor Replacement
Replacing the faulty transmission range sensor to restore proper functionality.
- Total: $150 - $300
- Success rate: 85%
Wiring Repair
Repairing damaged wiring or connectors related to the transmission range sensor.
- Total: $100 - $200
- Success rate: 75%
TCM Replacement
Replacing the transmission control module if it is determined to be faulty.
- Total: $400 - $800
- Success rate: 90%
Money-Saving Tips for C0735
- Start with the most common and least expensive repairs first
- Use GeekOBD APP to confirm diagnosis before replacing expensive parts
- Consider preventive maintenance to avoid future occurrences
- Compare prices for OEM vs aftermarket parts based on your needs
- Address the issue promptly to prevent more expensive secondary damage
Diagnostic Steps
Professional C0735 Diagnosis Process
Follow these systematic steps to accurately diagnose C0735. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes)
Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes).
Step 2: Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes)
Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes).
Step 3: Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components, particularly the transmission range sensor (20-30 minutes)
Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components, particularly the transmission range sensor (20-30 minutes).
Step 4: Step 4: System function test - Verify proper operation after repairs and clear codes with the GeekOBD APP (10-15 minutes)
Step 4: System function test - Verify proper operation after repairs and clear codes with the GeekOBD APP (10-15 minutes).
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success (15-20 minutes)
Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success (15-20 minutes).
Important Notes
- Always verify the repair with GeekOBD APP after completing diagnostic steps
- Clear codes and test drive to ensure the problem is resolved
- Address underlying causes to prevent code recurrence
Real Repair Case Studies
Case Study 1: Transmission Range Sensor Replacement on 2017 Chevrolet Silverado
Vehicle: 2017 Chevrolet Silverado 1500, 65,000 miles
Problem: Customer reported check engine light and difficulty shifting gears.
Diagnosis: Scanned for codes using the GeekOBD APP, confirmed C0735, and inspected the transmission range sensor.
Solution: Replaced the faulty transmission range sensor and cleared the codes.
Cost: $250 (sensor $150, labor $100)
Result: Customer reported smooth shifting and no further check engine light after repair.
Case Study 2: Wiring Repair on 2016 GMC Sierra
Vehicle: 2016 GMC Sierra 1500, 70,000 miles
Problem: Check engine light intermittently on, with rough shifting.
Diagnosis: Using the GeekOBD APP, confirmed C0735 and found damaged wiring to the transmission range sensor.
Solution: Repaired the damaged wiring and reconnected the sensor.
Cost: $180 (labor $80, wiring repair $100)
Result: Issue resolved, and the vehicle performs normally with no check engine light.