OBD Guide

C161D

Electric Pump Relay Circuit System Malfunction

C161D is an OBD-II diagnostic trouble code meaning: Electric Pump Relay Circuit System Malfunction. Common causes: faulty electric pump relay, open or short circuit in wiring harness. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Electric pump does not work
  • Check Engine light comes on
  • Reduced efficiency of connected systems

Causes

  • Faulty electric pump relay
  • Open or short circuit in wiring harness
  • Electric pump problems
  • ECU malfunction

How to Fix

  1. Check the electric pump relay for faults
  2. Inspect the wiring harness for damage
  3. Check the operation of the electric pump
  4. If necessary, replace faulty components
  5. Reset the error and check if it returns

Related codes

FAQ

What does the C161D code mean?

C161D is an OBD-II diagnostic trouble code that indicates: Electric Pump Relay Circuit System Malfunction

What causes a C161D error code?

The most common causes of C161D include: Faulty electric pump relay; Open or short circuit in wiring harness; Electric pump problems; ECU malfunction.

How do I fix a C161D diagnostic trouble code?

To fix C161D: Check the electric pump relay for faults. Inspect the wiring harness for damage. Check the operation of the electric pump. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C161D?

Limited driving only, diagnose soon

How much does it cost to fix C161D?

The estimated repair cost for C161D is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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