OBD Guide
ENFRDEESPT

C164A

EPS Communication Malfunction

C164A is an OBD-II diagnostic trouble code meaning: EPS Communication Malfunction. Common causes: can bus break or damage, poor contact in eps connectors. Estimated repair cost: $56–167.

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

Symptoms

  • Check engine light is on
  • Increased effort when turning the steering wheel
  • Floating steering operation
  • Possible related errors from other systems

Causes

  • CAN bus break or damage
  • Poor contact in EPS connectors
  • EPS control unit malfunction
  • Problems with power supply to the EPS unit
  • Software glitch in the system

How to Fix

  1. Check the integrity of the CAN bus wiring harness
  2. Check the contacts in the connectors of the EPS block
  3. Diagnose the power supply of the EPS unit
  4. Read complete error history using scanner
  5. If necessary, reflash the EPS unit

Related codes

U0121U0140C1610

FAQ

What does the C164A code mean?

C164A is an OBD-II diagnostic trouble code that indicates: EPS Communication Malfunction

What causes a C164A error code?

The most common causes of C164A include: CAN bus break or damage; Poor contact in EPS connectors; EPS control unit malfunction; Problems with power supply to the EPS unit.

How do I fix a C164A diagnostic trouble code?

To fix C164A: Check the integrity of the CAN bus wiring harness. Check the contacts in the connectors of the EPS block. Diagnose the power supply of the EPS unit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C164A?

Limited driving only, diagnose soon

How much does it cost to fix C164A?

The estimated repair cost for C164A is $56–167. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat