OBD Guide
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P1659

Electronic Throttle Control System Control Relay OFF Malfunction

P1659 is an OBD-II diagnostic trouble code meaning: Electronic Throttle Control System Control Relay OFF Malfunction. Common causes: faulty etc control relay, open or short circuit in the relay circuit. Estimated repair cost: $6–33.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$6–33 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Unstable engine idling
  • Acceleration problems
  • The car goes into emergency mode

Causes

  • Faulty ETC control relay
  • Open or short circuit in the relay circuit
  • Poor contact in relay connectors
  • Relay power problems
  • Engine control unit malfunction

How to Fix

  1. Check the condition of the ETC relay and replace if necessary.
  2. Check the integrity and resistance of the relay control circuits
  3. Check relay supply voltage
  4. Inspect and clean connector contacts
  5. If necessary, diagnose the engine control unit

Related codes

P1635P1636P1637

FAQ

What does the P1659 code mean?

P1659 is an OBD-II diagnostic trouble code that indicates: Electronic Throttle Control System Control Relay OFF Malfunction

What causes a P1659 error code?

The most common causes of P1659 include: Faulty ETC control relay; Open or short circuit in the relay circuit; Poor contact in relay connectors; Relay power problems.

How do I fix a P1659 diagnostic trouble code?

To fix P1659: Check the condition of the ETC relay and replace if necessary.. Check the integrity and resistance of the relay control circuits. Check relay supply voltage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1659?

Limited driving only, diagnose soon

How much does it cost to fix P1659?

The estimated repair cost for P1659 is $6–33. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat