OBD Guide

P17EA

Ratio Monitoring Shift 5-6

P17EA is an OBD-II diagnostic trouble code meaning: Ratio Monitoring Shift 5-6. Common causes: low or contaminated transmission fluid, problems with shaft speed sensors. Estimated repair cost: $17–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–167 (est.)

Symptoms

  • Rough shifting between 5th and 6th gears
  • Delays when shifting gears
  • Power loss in high gears
  • Increased fuel consumption
  • Check Engine light comes on

Causes

  • Low or contaminated transmission fluid
  • Problems with shaft speed sensors
  • Worn clutches or other gearbox components
  • Transmission control module (TCM) malfunction
  • Problems with wiring or connections

How to Fix

  1. Check the level and condition of the transmission fluid
  2. Scan trouble codes using a diagnostic scanner
  3. Check speed sensors and their wiring
  4. Carry out diagnostics of the transmission control unit
  5. If necessary, replace worn transmission components

Related codes

FAQ

What does the P17EA code mean?

P17EA is an OBD-II diagnostic trouble code that indicates: Ratio Monitoring Shift 5-6

What causes a P17EA error code?

The most common causes of P17EA include: Low or contaminated transmission fluid; Problems with shaft speed sensors; Worn clutches or other gearbox components; Transmission control module (TCM) malfunction.

How do I fix a P17EA diagnostic trouble code?

To fix P17EA: Check the level and condition of the transmission fluid. Scan trouble codes using a diagnostic scanner. Check speed sensors and their wiring. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P17EA?

Limited driving only, diagnose soon

How much does it cost to fix P17EA?

The estimated repair cost for P17EA is $17–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat