OBD Guide
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P15C3

Intelligent Battery Sensor Wake-up Line Disconnection

P15C3 is an OBD-II diagnostic trouble code meaning: Intelligent Battery Sensor Wake-up Line Disconnection. Common causes: broken wire in the ibs wake-up circuit, oxidation or damage to sensor connector contacts. Estimated repair cost: $28–89.

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

Symptoms

  • Start-stop system does not work
  • Check engine light comes on
  • Battery charging problems
  • Incorrect battery voltage readings
  • Reduced efficiency of the power system

Causes

  • Broken wire in the IBS wake-up circuit
  • Oxidation or damage to sensor connector contacts
  • Smart Battery Sensor Malfunction
  • Wiring harness damage
  • Problems with the control unit

How to Fix

  1. Check the integrity of the IBS wake-up circuit wiring
  2. Inspect and clean the sensor connector contacts
  3. Check resistance and voltage in the circuit
  4. Replace the smart battery sensor if necessary
  5. Check the operation of the system after repair

Related codes

P15C0P15C1P15C2

FAQ

What does the P15C3 code mean?

P15C3 is an OBD-II diagnostic trouble code that indicates: Intelligent Battery Sensor Wake-up Line Disconnection

What causes a P15C3 error code?

The most common causes of P15C3 include: Broken wire in the IBS wake-up circuit; Oxidation or damage to sensor connector contacts; Smart Battery Sensor Malfunction; Wiring harness damage.

How do I fix a P15C3 diagnostic trouble code?

To fix P15C3: Check the integrity of the IBS wake-up circuit wiring. Inspect and clean the sensor connector contacts. Check resistance and voltage in the circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P15C3?

Yes, but get it checked soon

How much does it cost to fix P15C3?

The estimated repair cost for P15C3 is $28–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat