OBD Guide
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P1147

Heated Oxygen Sensor 2 Maximum Voltage Monitoring Bank 1

P1147 is an OBD-II diagnostic trouble code meaning: Heated Oxygen Sensor 2 Maximum Voltage Monitoring Bank 1. Common causes: malfunction of oxygen sensor 2 (bank 1), open or short circuit in the sensor circuit. Estimated repair cost: $28–89.

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

Symptoms

  • Increased fuel consumption
  • Check Engine Light Is On
  • Reduced engine power
  • Dips during acceleration
  • Increased emissions of harmful substances

Causes

  • Malfunction of oxygen sensor 2 (bank 1)
  • Open or short circuit in the sensor circuit
  • Poor contact in the sensor connector
  • Vacuum leak
  • Fuel system problems (mixture too rich)

How to Fix

  1. Check the integrity of the wiring to the sensor
  2. Check the sensor connector for corrosion and damage.
  3. Measure the resistance and voltage of the sensor
  4. Replace a faulty oxygen sensor
  5. Reset the code and check if it appears again

Related codes

P0137P0138P0140

Error P1147 by Vehicle Brand

Volkswagen

FAQ

What does the P1147 code mean?

P1147 is an OBD-II diagnostic trouble code that indicates: Heated Oxygen Sensor 2 Maximum Voltage Monitoring Bank 1

What causes a P1147 error code?

The most common causes of P1147 include: Malfunction of oxygen sensor 2 (bank 1); Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Vacuum leak.

How do I fix a P1147 diagnostic trouble code?

To fix P1147: Check the integrity of the wiring to the sensor. Check the sensor connector for corrosion and damage.. Measure the resistance and voltage of the sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1147?

Yes, but get it checked soon

How much does it cost to fix P1147?

The estimated repair cost for P1147 is $28–89. Actual cost depends on your vehicle, location, and labor rates.

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