OBD Guide
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P3073

Engine Coolant Pump Low Current

P3073 is an OBD-II diagnostic trouble code meaning: Engine Coolant Pump Low Current. Common causes: coolant pump malfunction, open or short circuit in the pump circuit. Estimated repair cost: $33–111.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$33–111 (est.)

Symptoms

  • Engine overheating
  • Unstable engine operation
  • Check Engine light comes on
  • Reduced engine power
  • Increased fuel consumption

Causes

  • Coolant pump malfunction
  • Open or short circuit in the pump circuit
  • Pump relay problems
  • Engine control unit malfunction
  • Corrosion of contacts or connectors

How to Fix

  1. Check the continuity of the coolant pump circuit
  2. Check the functionality of the coolant pump
  3. Check pump relays and fuses
  4. Check contacts and connectors for corrosion
  5. If necessary, replace the coolant pump

Related codes

P3074P3075P3076

FAQ

What does the P3073 code mean?

P3073 is an OBD-II diagnostic trouble code that indicates: Engine Coolant Pump Low Current

What causes a P3073 error code?

The most common causes of P3073 include: Coolant pump malfunction; Open or short circuit in the pump circuit; Pump relay problems; Engine control unit malfunction.

How do I fix a P3073 diagnostic trouble code?

To fix P3073: Check the continuity of the coolant pump circuit. Check the functionality of the coolant pump. Check pump relays and fuses. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P3073?

Do not drive — repair immediately

How much does it cost to fix P3073?

The estimated repair cost for P3073 is $33–111. Actual cost depends on your vehicle, location, and labor rates.

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