OBD Guide
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P1A71

14 Volt Power Module Temperature Sensor 2 Performance

P1A71 is an OBD-II diagnostic trouble code meaning: 14 Volt Power Module Temperature Sensor 2 Performance. Common causes: malfunction of temperature sensor no. 2, problems with wiring to the sensor. Estimated repair cost: $33–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$33–89 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced hybrid system efficiency
  • The car may go into emergency mode
  • Possible problems with charging the high-voltage battery
  • Power Loss in Hybrid Mode

Causes

  • Malfunction of temperature sensor No. 2
  • Problems with wiring to the sensor
  • Malfunction of the power module itself
  • Contact corrosion
  • Problems with the hybrid system control unit

How to Fix

  1. Check the condition of the temperature sensor
  2. Check the integrity of wiring and contacts
  3. Test the operation of the power module
  4. Replace the faulty sensor if necessary
  5. Reset error after repair

Related codes

P1A70P1A72P0A7F

FAQ

What does the P1A71 code mean?

P1A71 is an OBD-II diagnostic trouble code that indicates: 14 Volt Power Module Temperature Sensor 2 Performance

What causes a P1A71 error code?

The most common causes of P1A71 include: Malfunction of temperature sensor No. 2; Problems with wiring to the sensor; Malfunction of the power module itself; Contact corrosion.

How do I fix a P1A71 diagnostic trouble code?

To fix P1A71: Check the condition of the temperature sensor. Check the integrity of wiring and contacts. Test the operation of the power module. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1A71?

Yes, but get it checked soon

How much does it cost to fix P1A71?

The estimated repair cost for P1A71 is $33–89. Actual cost depends on your vehicle, location, and labor rates.

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