C2301 Code - Shift Changing Time Malfunction
Quick Answer
The Transmission Control ECU receives a P position switch signal from the power management control ECU (HV CPU) and then activates the shift control actuator. Common causes include Faulty Shift Control Actuator, Faulty Transmission Control ECU Assembly, Faulty Hybrid Vehicle Transaxle Assembly. 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
- C2301 indicates Shift Changing Time Malfunction.
- Common causes
- Common causes include Faulty Shift Control Actuator, Faulty Transmission Control ECU Assembly, Faulty Hybrid Vehicle Transaxle Assembly.
- 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 C2301 Description
What are the Possible Causes of the DTC C2301?
- Faulty Shift Control Actuator
- Faulty Transmission Control ECU Assembly
- Faulty Hybrid Vehicle Transaxle Assembly
- Faulty Auxiliary Battery
How to Fix the DTC C2301?
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 C2301 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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Need Help with the Code?
Get the C2301 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- C2301 Lexus — Shift Changing Time Malfunction
- C2301 Toyota — Shift Changing Time Malfunction
Frequently Asked Questions about C2301 Code
1. What does OBDII code C2301 mean?
C2301 indicates a "Shift Changing Time Malfunction," meaning the transmission control module (TCM) has detected an issue with the time it takes to shift gears.
2. What are the common symptoms of code C2301?
Symptoms may include delayed or rough gear shifts, transmission slipping, reduced fuel efficiency, and the check engine light being illuminated.
3. What causes the C2301 code to appear?
Common causes include low transmission fluid, worn clutch components, faulty solenoids, damaged wiring, or a malfunctioning transmission control module.
4. Can driving with the C2301 code damage my vehicle?
Yes, ignoring this code can lead to transmission damage over time due to improper shifting or excessive stress on internal components.
5. How is the C2301 code diagnosed?
A technician will use a scan tool to read the code, inspect transmission fluid levels, check for wiring or connector issues, and test the performance of transmission solenoids.
6. Can low transmission fluid cause the C2301 code?
Yes, low or degraded transmission fluid can affect shifting times and trigger the C2301 code.
7. How do I fix the C2301 code?
Repairs may include topping off or replacing the transmission fluid, replacing faulty solenoids, repairing damaged wiring, or reprogramming or replacing the TCM.
8. How much does it cost to fix the C2301 code?
The repair cost depends on the underlying issue, ranging from $100 for a fluid change to several hundred dollars for solenoid or TCM replacement.
9. Can I clear the C2301 code without fixing the problem?
Clearing the code without addressing the root cause will likely result in the code returning and may cause further damage to the transmission.
10. Does a faulty TCM always cause the C2301 code?
No, while a faulty TCM can cause the code, more common causes include fluid issues or failing solenoids, so a thorough diagnosis is essential.
Discuss the causes and fixes for C2301 OBDII Code
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