OBD Guide

P1AB5

Starter/Generator Phase V Current Sensor Circuit Low Voltage

P1AB5 is an OBD-II diagnostic trouble code meaning: Starter/Generator Phase V Current Sensor Circuit Low Voltage. Common causes: phase v current sensor fault, open or short circuit in the sensor circuit. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Check Engine Light Is On
  • Battery charging problems
  • Unstable operation of the vehicle's electrical system
  • Generator power reduction
  • The car may not start

Causes

  • Phase V current sensor fault
  • Open or short circuit in the sensor circuit
  • Poor connection or corroded contacts
  • Generator malfunction
  • Problems with the control module

How to Fix

  1. Check the continuity of the current sensor circuit
  2. Check connections and contacts for corrosion
  3. Replace phase V current sensor if necessary
  4. Check generator operation
  5. Scan the control module for errors

Related codes

FAQ

What does the P1AB5 code mean?

P1AB5 is an OBD-II diagnostic trouble code that indicates: Starter/Generator Phase V Current Sensor Circuit Low Voltage

What causes a P1AB5 error code?

The most common causes of P1AB5 include: Phase V current sensor fault; Open or short circuit in the sensor circuit; Poor connection or corroded contacts; Generator malfunction.

How do I fix a P1AB5 diagnostic trouble code?

To fix P1AB5: Check the continuity of the current sensor circuit. Check connections and contacts for corrosion. Replace phase V current sensor if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1AB5?

Limited driving only, diagnose soon

How much does it cost to fix P1AB5?

The estimated repair cost for P1AB5 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat