OBD Guide
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P157E

Idle Throttle Valve Actuator 2 Short To Positive

P157E is an OBD-II diagnostic trouble code meaning: Idle Throttle Valve Actuator 2 Short To Positive. Common causes: short circuit in wiring harness, throttle actuator malfunction. Estimated repair cost: $28–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$28–89 (est.)

Symptoms

  • Unstable idle speed
  • Engine speed dips
  • Check Engine Light Illuminates
  • Engine transition to emergency mode
  • Reduced engine power

Causes

  • Short circuit in wiring harness
  • Throttle actuator malfunction
  • Damage to wire insulation
  • Problems with the engine ECU
  • Contact corrosion

How to Fix

  1. Check the integrity of the wiring harness
  2. Check actuator resistance
  3. Inspect connectors for corrosion
  4. Check control circuit voltage
  5. If necessary, replace the actuator

Related codes

P157FP157DP157C

FAQ

What does the P157E code mean?

P157E is an OBD-II diagnostic trouble code that indicates: Idle Throttle Valve Actuator 2 Short To Positive

What causes a P157E error code?

The most common causes of P157E include: Short circuit in wiring harness; Throttle actuator malfunction; Damage to wire insulation; Problems with the engine ECU.

How do I fix a P157E diagnostic trouble code?

To fix P157E: Check the integrity of the wiring harness. Check actuator resistance. Inspect connectors for corrosion. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P157E?

Yes, but get it checked soon

How much does it cost to fix P157E?

The estimated repair cost for P157E is $28–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat