OBD Guide
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P1662

Turbocharger Wastegate Regulating Valve Open Circuit / Short To Ground

P1662 is an OBD-II diagnostic trouble code meaning: Turbocharger Wastegate Regulating Valve Open Circuit / Short To Ground. Common causes: valve control circuit open, short circuit to ground. Estimated repair cost: $28–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$28–89 (est.)

Symptoms

  • Reduced engine power
  • Reduced throttle response
  • Check Engine Light Is On
  • Unstable engine operation under load
  • Turbine noise may change

Causes

  • Valve control circuit open
  • Short circuit to ground
  • Solenoid valve malfunction
  • Wiring harness damage
  • Poor contact in connectors

How to Fix

  1. Check valve control circuit integrity
  2. Check valve resistance (usually 10-30 ohms)
  3. Inspect connectors and wiring for damage
  4. If necessary, replace the control valve
  5. Check the operation of the turbine after repair

Related codes

P1661P1663P2563

Error P1662 by Vehicle Brand

BuickCadillacChevroletFordGMGMCLincolnMercuryOldsmobileSaturnToyota

FAQ

What does the P1662 code mean?

P1662 is an OBD-II diagnostic trouble code that indicates: Turbocharger Wastegate Regulating Valve Open Circuit / Short To Ground

What causes a P1662 error code?

The most common causes of P1662 include: Valve control circuit open; Short circuit to ground; Solenoid valve malfunction; Wiring harness damage.

How do I fix a P1662 diagnostic trouble code?

To fix P1662: Check valve control circuit integrity. Check valve resistance (usually 10-30 ohms). Inspect connectors and wiring for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1662?

Limited driving only, diagnose soon

How much does it cost to fix P1662?

The estimated repair cost for P1662 is $28–89. Actual cost depends on your vehicle, location, and labor rates.

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