February 12, 2001 Service bulletin

Subject regarding electronic control unit (ECU) reprogramming support

Toyota technical service bulletin TE0014 for 2001 Toyota Highlander.

Bulletin number: TE0014
Component: Electrical system: ignition: module
Summary: Subject regarding electronic control unit (ecu) reprogramming support. Certain 2001 four cylinder vehicles, if driven at temperatures below 30 degrees f, may display a malfunction indicator lamp (mil) and store one or more of the following diagnostic trouble codes: p0171, p0174, p1130, p1133, p1150, or p1155. If these codes are set, air / fuel ratio sensors, bank one, sensor one and bank two, sensor one are likely damaged and both sensors will need to be replaced. To avoid damaging the replacement air / fuel ratio sensors during cold weather driving these vehicles will need their ecu reprogrammed. Tt

Owners of these vehicles have filed 5 complaints in the electrical category.

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