OBD Guide

U3570

Stack Inlet Coolant Temperature Sensor Circuit

U3570 is an OBD-II diagnostic trouble code meaning: Stack Inlet Coolant Temperature Sensor Circuit. Common causes: open or short circuit in the sensor circuit, coolant temperature sensor malfunction. Estimated repair cost: $13–50.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$13–50 (est.)

Symptoms

  • Unstable engine operation
  • Increased fuel consumption
  • Engine overheating
  • Check Engine Light Is On
  • Reduced engine power

Causes

  • Open or short circuit in the sensor circuit
  • Coolant temperature sensor malfunction
  • Poor contact in the sensor connector
  • Wiring harness damage
  • Engine control unit malfunction

How to Fix

  1. Check the integrity of the sensor circuit
  2. Check the sensor connector for oxidation or damage.
  3. Replace the coolant temperature sensor if necessary
  4. Check and replace wiring harness if necessary
  5. Check for software updates for the engine control unit

Related codes

Error U3570 by Vehicle Brand

FAQ

What does the U3570 code mean?

U3570 is an OBD-II diagnostic trouble code that indicates: Stack Inlet Coolant Temperature Sensor Circuit

What causes a U3570 error code?

The most common causes of U3570 include: Open or short circuit in the sensor circuit; Coolant temperature sensor malfunction; Poor contact in the sensor connector; Wiring harness damage.

How do I fix a U3570 diagnostic trouble code?

To fix U3570: Check the integrity of the sensor circuit. Check the sensor connector for oxidation or damage.. Replace the coolant temperature sensor if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U3570?

Yes, but get it checked soon

How much does it cost to fix U3570?

The estimated repair cost for U3570 is $13–50. Actual cost depends on your vehicle, location, and labor rates.

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