You may need to replace the oxygen sensor:
·Oxygen sensor poisoning.
·Carbon buildup on the oxygen sensor.
·The oxygen sensor ceramic is broken.
·The heater resistance wire is burnt out.
·The internal circuit of the oxygen sensor is disconnected.
·Engine fault light alarm.
·Increased fuel consumption.

Disassembly and assembly process of oxygen sensor:
1.The special sleeve must be installed at the root of the oxygen sensor before being forcefully loosened.
2.When loosening, pay attention to the wiring harness on the oxygen sensor and install it before tightening.
3.Do not rotate it all at once, as the wiring harness can easily deform or even break.
4.After loosening, adjust the rotation angle back and forth to protect the wiring harness.
5.Pay attention to distinguishing the size of the special sleeve, and make sure to determine the size of the oxygen sensor before purchasing.

Please follow our store

let us solve your problems in a timely manner.

·Please contact us immediately through eBay and we will reply to you as soon as possible. If you could provide us with some pictures or videos to illustrate the specific location of the product issue. That will greatly accelerate the joyful mood of both of us.

·Please contact us through eBay and we will reply to you with the latest news as soon as possible. Usually, we track each batch of goods until the customer receives the order.

·I feel very sorry. Once the payment is settled, customers cannot modify any items, quantities, or add or delete items. We are also unable to change the delivery address. Therefore, please carefully check the quantity and address of the purchased products before making the payment.

·We will arrange the shipment in 1 business day after the payment is cleared. The tracking number will be updated on eBay in 24 hours after the shipment. Please notice that there is no shipment during weekend and holidays.

·I accept your convenient payment method.

·Free delivery in the United States, delivery time 1-5 working days.

·If you are unsure whether the product is suitable for you, you can consult me.

·Shipping Cost : Free to all 50 USA states.

·Shipping time: 5-10 business days with standard mail.

·Other Express:DHL and FedEx,But Freight Assume Yourself.

·We ship to eBay address

·We fully guarantee customers an exchange or refund within 14 business days of receipt if item DOA (damage on arrival).

·Warranty excludes normal product lifetime wear-out, wear and tear or abuse.

·Warranty does not apply to conditions resulting from misuse, abuse, negligence, accident, improper application, improper installation or alteration.

·For malfunction products under warranty period, please contact our customer service via EBay Message.

·If you have any questions you may reach us via ebay message.

·Please Do Not click "Return this item" in any situation as following picture shows. Because sometimes it will spend more time to resolve the issue for those items ·needn't to be returned for a replacement after fully communication.

·Click "Contact seller" via Ebay Message(protected by Ebay),that is the fastest way to solve any problem for you.

·Please contact us if you have any question without hesitation!

·Except holiday and weekend, we will reply your question wthin 1 business day !