P0062
UniversalHO2S Heater Control Circuit (Bank 2, Sensor 3) indicates that the Powertrain Control Module (PCM) has detected a malfunction in the electrical circuit that controls the heating element of the third oxygen sensor on the engine bank that does not contain cylinder #1.
Low SeverityThe vehicle's computer has detected an issue with the heater circuit for the oxygen sensor located after the catalytic converter on the second engine bank. This prevents the sensor from reaching its operating temperature quickly, potentially leading to increased emissions and slightly reduced fuel efficiency.
⚠️ Before You Begin (Safety First)
Always wear safety glasses and gloves when working under a vehicle. Ensure the vehicle is properly supported on jack stands and the engine is cool before touching exhaust components. Disconnect the battery before performing any electrical repairs to prevent accidental shorts or shocks.
Common Symptoms
- Check Engine Light illuminated
- Slight decrease in fuel economy
- Potentially increased exhaust emissions (may not be noticeable to the driver)
- Engine may run slightly rich or lean during warm-up
Common Causes
- Faulty HO2S heater element (Bank 2, Sensor 3)
- Damaged or corroded wiring/connector to the HO2S
- Blown fuse for the HO2S heater circuit
- Short circuit or open circuit in the HO2S heater wiring
- Faulty Powertrain Control Module (PCM)
Frequently reported on: Chevrolet Silverado/GMC Sierra (V8 models 2007-2013), Ford F-150/Expedition (V8 models 2005-2010), Toyota 4Runner/Tacoma (V6 models 2003-2009), Honda Pilot/Odyssey (V6 models 2005-2010)
Diagnostic Steps
- Visually inspect the wiring and connector for the Bank 2, Sensor 3 oxygen sensor for any signs of damage, corrosion, or looseness.
- Check the fuse associated with the oxygen sensor heater circuit (refer to your vehicle's service manual for location).
- Using a multimeter, test for continuity and proper voltage at the HO2S heater circuit connector.
- If wiring and fuse are good, consider replacing the Bank 2, Sensor 3 oxygen sensor.
- Clear the code and test drive the vehicle to confirm the repair.
👨🔧 When to Call a Professional
If you've checked the wiring and fuse and still can't pinpoint the issue, or if the sensor is seized and difficult to remove, it's best to consult a professional mechanic. Improper sensor replacement can damage exhaust components or new sensors.
Commonly Asked Questions
What does Bank 2, Sensor 3 mean?
Bank 2 refers to the engine bank that does not contain cylinder #1. Sensor 3 refers to the oxygen sensor located after the catalytic converter on that bank.
Can I drive with a P0062 code?
Yes, typically it's safe to drive, but it's recommended to fix it soon as it can lead to increased emissions and slightly worse fuel economy over time.
Is P0062 related to the catalytic converter?
Not directly. While Sensor 3 monitors the catalytic converter's efficiency, the P0062 code specifically indicates an issue with the sensor's heater circuit, not the converter itself.
How expensive is an oxygen sensor replacement?
The cost of an oxygen sensor itself can range from $30-$150. Labor costs would be additional if you have a mechanic do it, typically 1-2 hours.
Can a blown fuse cause P0062?
Yes, a blown fuse in the oxygen sensor heater circuit is a common cause for this code. It's one of the first things to check.