AutoCodesChevrolet – P00B6 Chevrolet

P00B6 Chevrolet Code - Radiator Coolant Temperature/Engine Coolant Temperature Correlation

Quick Answer

The Radiator Coolant Temperature (RCT) sensor is a variable resistor that measures the temperature of the engine coolant in the radiator. Common causes include Faulty Radiator Coolant Temperature (RCT) Sensor, Radiator Coolant Temperature Sensor harness is open or shorted, Radiator Coolant Temperature Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P00B6 Chevrolet indicates Radiator Coolant Temperature/Engine Coolant Temperature Correlation.
Common causes
Common causes include Faulty Radiator Coolant Temperature (RCT) Sensor, Radiator Coolant Temperature Sensor harness is open or shorted, Radiator Coolant Temperature Sensor circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 713
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 30, 2022
💬 Need more help? Ask Coddy for instant answers — it's free!

Code P00B6 Chevrolet Description

The Radiator Coolant Temperature (RCT) sensor is a variable resistor that measures the temperature of the engine coolant in the radiator. The Engine Control Module (ECM) supplies 5 volts to the RCT sensor signal circuit and supplies a ground to the low reference circuit. The purpose of this diagnostic is to determine if the input from the RCT sensor is skewed warmer than normal. The internal clock of the ECM will record the amount of time the engine is OFF. If the required engine OFF time is met at start-up, the ECM will compare the temperature difference between the actual measured RCT and Engine Coolant Temperature (ECT) sensors.
The Diagnostic Trouble Code (DTC) will be set when the ECM determines the absolute difference of temperature between the RCT start-up temperature and ECT start-up temperature is greater than 20°C (68°F).
OBDII Code P00B6 Chevrolet - Radiator Coolant Temperature/Engine Coolant Temperature Correlation - AutoCodes.com
P00B6 Chevrolet Code - Radiator Coolant Temperature/Engine Coolant Temperature Correlation

What are the Possible Causes of the DTC P00B6 Chevrolet?

  • Faulty Radiator Coolant Temperature (RCT) Sensor
  • Radiator Coolant Temperature Sensor harness is open or shorted
  • Radiator Coolant Temperature Sensor circuit poor electrical connection
  • Faulty Engine Coolant Temperature (ECT)
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P00B6 Chevrolet?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P00B6 Chevrolet code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P00B6 Chevrolet code?

Need more information on how to fix the P00B6 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P00B6 Chevrolet code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P00B6 Chevrolet Code

What does the OBDII code P00B6 mean for a Chevrolet?

P00B6 indicates a discrepancy between the readings of the radiator coolant temperature sensor and the engine coolant temperature sensor, suggesting a correlation issue.

What are the common symptoms of code P00B6 in a Chevrolet?

Symptoms may include the Check Engine Light turning on, engine overheating, poor fuel efficiency, or irregular temperature gauge readings.

What causes the P00B6 code to trigger in a Chevrolet?

Possible causes include a faulty radiator coolant temperature sensor, engine coolant temperature sensor, wiring issues, a stuck thermostat, or low coolant levels.

Can I drive my Chevrolet with a P00B6 code?

It's not recommended to drive for extended periods, as unresolved coolant temperature issues can lead to engine overheating and potential damage.

How do I diagnose a P00B6 code in my Chevrolet?

Start by scanning for additional codes, checking coolant levels, inspecting wiring and connectors, and testing the functionality of both temperature sensors.

What tools are needed to fix a P00B6 code on a Chevrolet?

You'll typically need an OBDII scanner, a multimeter for electrical testing, basic hand tools, and possibly a coolant system pressure tester.

How much does it cost to fix the P00B6 code on a Chevrolet?

Repair costs vary but may range from $50 for a sensor replacement to $200+ if other components like the thermostat or wiring require repairs.

Can low coolant levels cause the P00B6 code in a Chevrolet?

Yes, low coolant can cause inaccurate temperature readings, potentially triggering this code.

How do I reset the P00B6 code after repairs?

Use an OBDII scanner to clear the code after ensuring all issues are resolved. If the problem persists, the code may reappear.

What happens if I ignore the P00B6 code on my Chevrolet?

Ignoring this code can lead to engine overheating, reduced performance, and potential long-term engine damage.

Discuss the causes and fixes for P00B6 Chevrolet OBDII Code

Code P00B6 Chevrolet comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play