OBD Guide

U356C

Anode Header Drain Valve Control Circuit

U356C is an OBD-II diagnostic trouble code meaning: Anode Header Drain Valve Control Circuit. Common causes: malfunction of the anode manifold drain valve, open or short circuit in control circuit. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–167 (est.)

Symptoms

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

Causes

  • Malfunction of the anode manifold drain valve
  • Open or short circuit in control circuit
  • Wiring Harness Problems
  • Engine control unit malfunction

How to Fix

  1. Check the integrity of the control circuit
  2. Check the condition of the anode collector drain valve
  3. Check connections and wiring harness
  4. Replace faulty valve if necessary
  5. Repair only from an authorized dealer

Related codes

Error U356C by Vehicle Brand

FAQ

What does the U356C code mean?

U356C is an OBD-II diagnostic trouble code that indicates: Anode Header Drain Valve Control Circuit

What causes a U356C error code?

The most common causes of U356C include: Malfunction of the anode manifold drain valve; Open or short circuit in control circuit; Wiring Harness Problems; Engine control unit malfunction.

How do I fix a U356C diagnostic trouble code?

To fix U356C: Check the integrity of the control circuit. Check the condition of the anode collector drain valve. Check connections and wiring harness. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U356C?

Yes, but get it checked soon

How much does it cost to fix U356C?

The estimated repair cost for U356C is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat