P0735 Subaru Code - Gear 5 Incorrect Ratio
Quick Answer
This diagnosis monitors actual gear position by checking the torque converter slip ratio calculated by Transmission Control Module (TCM) as follows: Torque converter slip ratio = A x C/B A: Output shaft revolution signal from revolution sensor B: Engine speed signal from Engine Control Module (ECM) C: Gear ratio determined as gear position which TCM supposes If the actual gear position is higher than the position (5th) supposed by TCM, the slip ratio will be more than normal. Common causes include Low transmission fluid level, Dirty transmission fluid, Shift solenoids. 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
- P0735 Subaru indicates Gear 5 Incorrect Ratio.
- Common causes
- Common causes include Low transmission fluid level, Dirty transmission fluid, Shift solenoids.
- 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 P0735 Subaru Description
Torque converter slip ratio = A x C/B
A: Output shaft revolution signal from revolution sensor
B: Engine speed signal from Engine Control Module (ECM)
C: Gear ratio determined as gear position which TCM supposes
If the actual gear position is higher than the position (5th) supposed by TCM, the slip ratio will be more than normal. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction.
What are the Possible Causes of the DTC P0735 Subaru?
- Low transmission fluid level
- Dirty transmission fluid
- Shift solenoids
- Transmission mechanical problems
- Transmission hydraulic control circuit
How to Fix the DTC P0735 Subaru?
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 P0735 Subaru 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 P0735 Subaru code?
Need more information on how to fix the P0735 Subaru code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0735 Subaru code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0735 Subaru Code
1. What does the OBDII code P0735 mean on a Subaru?
P0735 indicates that the transmission control module (TCM) has detected an incorrect gear ratio in 5th gear, suggesting a possible issue with the transmission system.
2. What are the symptoms of code P0735 in a Subaru?
Common symptoms include slipping or harsh shifting in 5th gear, reduced fuel efficiency, transmission overheating, and the illumination of the check engine light.
3. What causes the P0735 code to appear in a Subaru?
Possible causes include low or dirty transmission fluid, a malfunctioning transmission solenoid, a faulty speed sensor, or internal transmission damage like worn gears or clutches.
4. Can driving with a P0735 code damage my Subaru?
Yes, driving with this code can cause further damage to the transmission if the underlying issue is not promptly addressed.
5. How do I diagnose a P0735 code in my Subaru?
Diagnosis typically involves checking the transmission fluid level and condition, scanning for additional codes, testing the transmission solenoids, and inspecting the speed sensors and wiring.
6. How can I fix a P0735 code on my Subaru?
Repairs may include replacing or flushing the transmission fluid, repairing or replacing faulty solenoids, sensors, or wiring, or rebuilding the transmission if internal damage is present.
7. Can a low transmission fluid level cause a P0735 code?
Yes, low or dirty transmission fluid can cause incorrect gear ratios, including triggering the P0735 code.
8. How much does it cost to fix a P0735 code on a Subaru?
The cost depends on the cause, ranging from $100–$300 for fluid and sensor replacements to over $2,000 for a transmission rebuild.
9. Is it safe to drive my Subaru with a P0735 code?
It’s not recommended, as the issue could worsen and lead to more extensive and costly transmission damage.
10. Can a faulty speed sensor trigger a P0735 code on a Subaru?
Yes, a malfunctioning speed sensor can send incorrect data to the TCM, causing it to detect an incorrect gear ratio and trigger the P0735 code.
Discuss the causes and fixes for P0735 Subaru OBDII Code
Code P0735 Subaru comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
