OBD Guide
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U111E

Lost Communication with EVAP Purge Pump

U111E is an OBD-II diagnostic trouble code meaning: Lost Communication with EVAP Purge Pump. Common causes: open or short circuit in the purge pump circuit, evap purge pump malfunction. 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 comes on
  • The smell of gasoline in or around the car
  • Increased fuel consumption
  • Problems when passing a technical inspection

Causes

  • Open or short circuit in the purge pump circuit
  • EVAP purge pump malfunction
  • Connector problems or contact corrosion
  • ECU malfunction
  • Wiring harness damage

How to Fix

  1. Check the integrity of the purge pump power supply circuit
  2. Inspect connectors and contacts for corrosion or damage
  3. Check the functionality of the EVAP purge pump
  4. Scan the ECU for additional errors
  5. If necessary, replace the purge pump or repair the wiring

Related codes

U111DU111FU1120

FAQ

What does the U111E code mean?

U111E is an OBD-II diagnostic trouble code that indicates: Lost Communication with EVAP Purge Pump

What causes a U111E error code?

The most common causes of U111E include: Open or short circuit in the purge pump circuit; EVAP purge pump malfunction; Connector problems or contact corrosion; ECU malfunction.

How do I fix a U111E diagnostic trouble code?

To fix U111E: Check the integrity of the purge pump power supply circuit. Inspect connectors and contacts for corrosion or damage. Check the functionality of the EVAP purge pump. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U111E?

Yes, but get it checked soon

How much does it cost to fix U111E?

The estimated repair cost for U111E is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat