DTC P0736 Reverse incorrect gear ratio

Within the intricate mechanics of a vehicle’s transmission system, the Diagnostic Trouble Code (DTC) P0736 emerges as a critical indicator. Today, we embark on an exploration to decipher the meaning, causes, symptoms, diagnostic methodologies, and effective solutions related to the issue of an incorrect gear ratio specifically within the reverse gear.

1. What does P0736 code mean?

The P0736 code specifically signifies an incorrect gear ratio within the reverse gear, as detected by the Transmission Control Module (TCM). It denotes a discrepancy between the anticipated gear ratio by the TCM and the actual gear ratio within the reverse gear.

2. What are the causes of DTC P0736?

Activation of the P0736 code pertaining to the reverse gear can originate from various factors, including:

  • Low or Contaminated Transmission Fluid: Inadequate or contaminated transmission fluid can impede proper gear engagement in the reverse gear.
  • Faulty Shift Solenoids: Malfunctioning shift solenoids can disrupt the gear-shifting process specifically within the reverse gear.
  • Clutch Assembly Issues: Problems within the clutch assembly, such as wear or damage, can hinder proper gear engagement in reverse.
  • Transmission Control Module (TCM) Problems: A malfunctioning TCM might misinterpret gear engagement signals within the reverse gear.
  • Internal Mechanical Faults: Mechanical irregularities within the transmission system affecting the reverse gear operation.

3. What are the symptoms of DTC P0736?

When the P0736 code surfaces for the reverse gear, you might observe various symptoms, including:

  • Check Engine Light Activation: Illumination of the check engine light indicating an issue within the reverse gear.
  • Difficulty Shifting into Reverse: Challenges experienced while engaging or shifting into the reverse gear.
  • Unusual Transmission Behavior: Unusual sounds, slipping, or jerking while operating in the reverse gear.

4. How to diagnose DTC P0736?

For an accurate diagnosis related to the reverse gear:

  • Perform OBD-II Scan: Utilize a diagnostic scanner to retrieve the P0736 code and any accompanying codes for comprehensive insights.
  • Transmission Fluid Inspection: Examine the quality and quantity of transmission fluid specifically related to the reverse gear.
  • Assess Shift Solenoids and Clutch Components: Inspect shift solenoids and the clutch assembly for proper functioning within the reverse gear.
  • Evaluate TCM Signals: Analyze the signals sent and received by the TCM specifically regarding reverse gear engagement.

5. How to fix DTC P0736 problem?

Rectifying the P0736 code associated with the reverse gear involves:

  • Transmission Fluid Maintenance: Ensure transmission fluid levels and quality adhere to manufacturer specifications for the reverse gear operation.
  • Repair or Replace Components: Address issues with shift solenoids, clutch components, or TCM related to reverse gear engagement.
  • Clear the DTC: Utilize a diagnostic scanner to clear the trouble code post-resolution of the root issue within the reverse gear.


The P0736 code indicating an incorrect gear ratio within the reverse gear necessitates immediate attention to maintain the functionality of your vehicle’s transmission. Understanding its causes, symptoms, diagnostic procedures, and effective solutions empowers you to efficiently address this issue, restoring optimal performance and smooth gear engagement within the reverse gear.

While this guide offers valuable insights, seeking assistance from certified auto technicians is advisable for accurate diagnosis and resolution of DTC issues related to an incorrect gear ratio within the reverse gear. Stay informed, but rely on expert guidance when necessary to ensure your vehicle operates at its best.