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P0731 HONDA Code - Problem In 1st Clutch And 1st Clutch Hydraulic Circuit

- Code Popularity: 5,416 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
By AutoCodes.com - Updated Jun 14, 2015
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|P0731 HONDA code possible causes

  • Low transmission fluid level
  • Dirty transmission fluid
  • Shift solenoids
  • Transmission mechanical problems
  • Transmission hydraulic control circuit

|How do I fix code P0731 HONDA code?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Does your car have Safety Recalls? → Check here

|P0731 HONDA code tech notes

Start by inspecting the transmission fluid level and condition, and change fluid if necessary.

|Cost of diagnosing P0731 HONDA code

Labor: 1.0

The cost of diagnosing the P0731 HONDA code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

|When is the P0731 HONDA code detected?

P0731 is detected when A/T cannot be shifted to the 1st gear position even if electrical circuit is good.

|What are P0731 HONDA code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Incorrect transmission shifting

|P0731 HONDA code description

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 (1st) supposed by TCM, the slip ratio will be more than normal. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction.

OBDII Code p0731 honda - Problem In 1st Clutch And 1st Clutch Hydraulic Circuit - AutoCodes.com
P0731 HONDA Code - Problem In 1st Clutch And 1st Clutch Hydraulic Circuit

|Need more information with the P0731 HONDA code?

Need more information on how to fix the P0731 HONDA code? Get Access to Factory Service Manuals

|Need help with a P0731 HONDA code?

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|P0731 HONDA code comments

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