OBD Guide

P27A0

Four Wheel Drive (4WD) Range Signal Circuit High

P27A0 is an OBD-II diagnostic trouble code meaning: Four Wheel Drive (4WD) Range Signal Circuit High. Common causes: 4wd range sensor malfunction, open or short circuit in the circuit. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Check Engine Light Is On
  • Four-wheel drive system malfunction
  • The car does not switch to 4WD mode
  • Reduced vehicle dynamics
  • Errors in the transmission system

Causes

  • 4WD Range Sensor Malfunction
  • Open or short circuit in the circuit
  • Wiring Harness Problems
  • Four-wheel drive control module malfunction
  • Corrosion of contacts or connectors

How to Fix

  1. Check 4WD Range Sensor
  2. Inspect the chain for damage
  3. Check connectors and contacts
  4. Test the four-wheel drive control module
  5. Replace faulty components

Related codes

Error P27A0 by Vehicle Brand

FAQ

What does the P27A0 code mean?

P27A0 is an OBD-II diagnostic trouble code that indicates: Four Wheel Drive (4WD) Range Signal Circuit High

What causes a P27A0 error code?

The most common causes of P27A0 include: 4WD Range Sensor Malfunction; Open or short circuit in the circuit; Wiring Harness Problems; Four-wheel drive control module malfunction.

How do I fix a P27A0 diagnostic trouble code?

To fix P27A0: Check 4WD Range Sensor. Inspect the chain for damage. Check connectors and contacts. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P27A0?

Yes, but get it checked soon

How much does it cost to fix P27A0?

The estimated repair cost for P27A0 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat