OBD Guide
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P150E

Supply Voltage Circuit 1 Low Voltage

P150E is an OBD-II diagnostic trouble code meaning: Supply Voltage Circuit 1 Low Voltage. Common causes: weak or dead battery, faulty generator. Estimated repair cost: $11–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$11–167 (est.)

Symptoms

  • Unstable engine operation
  • Difficulty starting the engine
  • Check Engine Light Is On
  • Loss of engine power
  • Malfunctions of the car's electronic systems

Causes

  • Weak or dead battery
  • Faulty generator
  • Damaged or corroded wiring
  • Poor contact in connectors
  • Engine control module (ECM) malfunction

How to Fix

  1. Check battery level
  2. Test the operation of the generator
  3. Inspect wiring and connectors for damage
  4. Check the integrity of the fuses
  5. Diagnose ECM if necessary

Related codes

P0562P0563P0620

FAQ

What does the P150E code mean?

P150E is an OBD-II diagnostic trouble code that indicates: Supply Voltage Circuit 1 Low Voltage

What causes a P150E error code?

The most common causes of P150E include: Weak or dead battery; Faulty generator; Damaged or corroded wiring; Poor contact in connectors.

How do I fix a P150E diagnostic trouble code?

To fix P150E: Check battery level. Test the operation of the generator. Inspect wiring and connectors for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P150E?

Limited driving only, diagnose soon

How much does it cost to fix P150E?

The estimated repair cost for P150E is $11–167. Actual cost depends on your vehicle, location, and labor rates.

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