P0151: Oxygen O2 Sensor Circuit Low Voltage (Bank 2, Sensor 1)

What Does The P0151 Code Mean?

Essentially the same as P0136and P0137and P0131, a P0151 code refers to the first oxygen sensor on Bank 2. P0151 means the O2 oxygen sensor’s voltage remained low for longer than 2 minutes.

This, is interpreted by the ECM as a low voltage condition and sets the MIL. Bank 2 Sensor 1 is located in front of the catalytic converter.

What Are The Symptoms Of The P0151 Code?

There may be no visible symptoms to the driver, other than the MIL (Check Engine / Service Engine Soon) illumination.

What Are The Potential Causes Of The P0151 Code?

A code P0151 may mean that one or more of the following has happened:

• Faulty o2 oxygen sensor
• Short to voltage on O2 signal circuit
• High resistance or open on O2 signal circuit

How Can You Fix The P0151 Code?

• Replace faulty sensor
• Repair short, open, or high resistance on o2 signal circuit

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> O2 Sensor
>>> Twippo 372Pcs Waterproof Wire Connectors Kit

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Check This Video For Reference

Reference Sources

ENGINE CONTROL SYSTEM [GASOLINE ENGINE (V-6)] SERVICE MANUAL for P0151 – Pages 427-429.