OBD Guide

P09A8

Gate Select Position Circuit C Low

P09A8 is an OBD-II diagnostic trouble code meaning: Gate Select Position Circuit C Low. Common causes: open or short circuit in the sensor circuit, selector lever position sensor malfunction. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Incorrect gear shifting
  • The gearbox goes into emergency mode
  • Check Engine light comes on
  • Reduced vehicle dynamics
  • Difficulty starting the engine

Causes

  • Open or short circuit in the sensor circuit
  • Selector lever position sensor malfunction
  • Problems with the transmission control unit
  • Oxidation of contacts in connectors
  • Mechanical damage to wiring

How to Fix

  1. Check the integrity of wiring and connectors
  2. Check the resistance of the selector position sensor
  3. Check the signal from the sensor to the control unit
  4. Replace the selector lever position sensor if necessary
  5. Update transmission control unit software

Related codes

Error P09A8 by Vehicle Brand

FAQ

What does the P09A8 code mean?

P09A8 is an OBD-II diagnostic trouble code that indicates: Gate Select Position Circuit C Low

What causes a P09A8 error code?

The most common causes of P09A8 include: Open or short circuit in the sensor circuit; Selector lever position sensor malfunction; Problems with the transmission control unit; Oxidation of contacts in connectors.

How do I fix a P09A8 diagnostic trouble code?

To fix P09A8: Check the integrity of wiring and connectors. Check the resistance of the selector position sensor. Check the signal from the sensor to the control unit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P09A8?

Limited driving only, diagnose soon

How much does it cost to fix P09A8?

The estimated repair cost for P09A8 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat