OBD Guide

U356D

Anode Header Drain Valve

U356D is an OBD-II diagnostic trouble code meaning: Anode Header Drain Valve. Common causes: malfunction of the anode manifold drain valve, open or short circuit in control circuit. Estimated repair cost: $17–56.

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

Symptoms

  • Unstable engine operation
  • Power Loss
  • Increased fuel consumption
  • Check engine light comes on

Causes

  • Malfunction of the anode manifold drain valve
  • Open or short circuit in control circuit
  • Problems with the engine control unit
  • Contamination or mechanical damage to the valve

How to Fix

  1. Check valve control circuit integrity
  2. Check valve resistance
  3. Clean or replace valve if necessary
  4. Check the operation of the engine control unit

Error U356D by Vehicle Brand

FAQ

What does the U356D code mean?

U356D is an OBD-II diagnostic trouble code that indicates: Anode Header Drain Valve

What causes a U356D error code?

The most common causes of U356D include: Malfunction of the anode manifold drain valve; Open or short circuit in control circuit; Problems with the engine control unit; Contamination or mechanical damage to the valve.

How do I fix a U356D diagnostic trouble code?

To fix U356D: Check valve control circuit integrity. Check valve resistance. Clean or replace valve if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U356D?

Yes, but get it checked soon

How much does it cost to fix U356D?

The estimated repair cost for U356D is $17–56. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat