OBD Guide
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P1829

Transmission Transfer Case Counter Clockwise Shift Relay Coil Open Circuit

P1829 is an OBD-II diagnostic trouble code meaning: Transmission Transfer Case Counter Clockwise Shift Relay Coil Open Circuit. Common causes: open circuit in the relay coil circuit, poor contact in connectors. Estimated repair cost: $6–33.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$6–33 (est.)

Symptoms

  • Inability to switch transfer case modes
  • Check Engine light comes on
  • Transmission transition to emergency mode
  • Reduced vehicle dynamics

Causes

  • Open circuit in the relay coil circuit
  • Poor contact in connectors
  • Faulty relay
  • Wiring harness damage
  • Transmission control module (TCM) problems

How to Fix

  1. Check the continuity of the relay coil circuit
  2. Inspect and clean the connector contacts
  3. Check relay functionality
  4. Replace damaged wires or relays
  5. Check the operation of the transmission control unit

Related codes

P1830P1831P1832

Error P1829 by Vehicle Brand

Volkswagen

FAQ

What does the P1829 code mean?

P1829 is an OBD-II diagnostic trouble code that indicates: Transmission Transfer Case Counter Clockwise Shift Relay Coil Open Circuit

What causes a P1829 error code?

The most common causes of P1829 include: Open circuit in the relay coil circuit; Poor contact in connectors; Faulty relay; Wiring harness damage.

How do I fix a P1829 diagnostic trouble code?

To fix P1829: Check the continuity of the relay coil circuit. Inspect and clean the connector contacts. Check relay functionality. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1829?

Limited driving only, diagnose soon

How much does it cost to fix P1829?

The estimated repair cost for P1829 is $6–33. Actual cost depends on your vehicle, location, and labor rates.

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