OBD Guide
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P1827

Transmission 4-Wheel Drive Low Clutch Relay Circuit To Ground

P1827 is an OBD-II diagnostic trouble code meaning: Transmission 4-Wheel Drive Low Clutch Relay Circuit To Ground. Common causes: faulty downshift relay, open or short circuit in the relay circuit. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Inability to engage downshift
  • Check Engine Light Is On
  • Delayed gear shifting
  • The car remains in 2WD mode

Causes

  • Faulty downshift relay
  • Open or short circuit in the relay circuit
  • Wiring Harness Problems
  • Transmission control unit malfunction

How to Fix

  1. Check the downshift relay for damage
  2. Check the integrity of the relay circuit
  3. Inspect the wiring harness for damage
  4. Check the operation of the transmission control unit
  5. Replace relay if necessary

Related codes

P1828P1829P1830

FAQ

What does the P1827 code mean?

P1827 is an OBD-II diagnostic trouble code that indicates: Transmission 4-Wheel Drive Low Clutch Relay Circuit To Ground

What causes a P1827 error code?

The most common causes of P1827 include: Faulty downshift relay; Open or short circuit in the relay circuit; Wiring Harness Problems; Transmission control unit malfunction.

How do I fix a P1827 diagnostic trouble code?

To fix P1827: Check the downshift relay for damage. Check the integrity of the relay circuit. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1827?

Yes, but get it checked soon

How much does it cost to fix P1827?

The estimated repair cost for P1827 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat