Engine-CodesGeneric – P0A86

P0A86 Code - 14 Volt Power Module Current Sensor Circuit

Quick Answer

The P0A86 diagnostic trouble code (DTC) refers to a 14 Volt Power Module Current Sensor Circuit malfunction. Common causes include Faulty current sensor, Wiring issues or shorts in the current sensor circuit, Corrosion or poor connections in the circuit. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0A86 indicates 14 Volt Power Module Current Sensor Circuit.
Common causes
Common causes include Faulty current sensor, Wiring issues or shorts in the current sensor circuit, Corrosion or poor connections in the circuit.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code P0A86 Description

The P0A86 diagnostic trouble code (DTC) refers to a 14 Volt Power Module Current Sensor Circuit malfunction. This code is typically found in hybrid vehicles that utilize a 14-volt power module to manage the electrical systems. The current sensor circuit is responsible for monitoring the current flow within the power module to ensure proper operation and prevent overloading.

OBDII Code P0A86 - 14 Volt Power Module Current Sensor Circuit
P0A86 Code - 14 Volt Power Module Current Sensor Circuit

Common Causes of P0A86

  1. Faulty current sensor
  2. Wiring issues or shorts in the current sensor circuit
  3. Corrosion or poor connections in the circuit
  4. Defective 14-volt power module
  5. Software issues affecting the current sensor readings

Symptoms of P0A86

  1. Flickering lights or dimming displays
  2. Erratic behavior of electrical components
  3. Complete power loss to certain systems
  4. Check Engine light illuminated
  5. Reduced fuel efficiency

How to Fix P0A86

  1. Begin by conducting a thorough inspection of the current sensor circuit and the 14-volt power module to identify any visible damage or loose connections.
  2. Test the current sensor using a multimeter to determine if it is functioning correctly or needs replacement.
  3. Check the wiring for any signs of damage, corrosion, or shorts, and repair or replace as necessary.
  4. If the 14-volt power module is found to be faulty, it will need to be replaced with a new unit.
  5. Clear the DTC from the vehicle's computer system and perform a test drive to ensure that the issue has been resolved.

Cost to Fix P0A86

The typical repair costs for addressing a P0A86 code can vary depending on the specific cause of the issue and the vehicle's make and model. On average, the parts required for this repair, such as a new current sensor or power module, can range from $100 to $500. Labor costs at auto repair shops can range from $80 to $150 per hour, with the total repair bill likely falling between $200 and $800. It is recommended to obtain quotes from local auto repair shops to get a more accurate estimate based on your location and vehicle type.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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