How Do You Fix P0158 Code?

1. Replace the rear oxygen sensor.
2. Repair any oxygen sensor wires that have shorted out, are broken or exposed.
3. Make necessary repairs to remedy the excessive fuel pressure.
4. Replace engine coolant temperature sensor if it is necessary.

What is P0158 engine code?

When trouble code P0158 is set, this indicates that there is

a high voltage (steadily above . 9 volts) for more than 10 seconds

indicating a lack of oxygen in the exhaust stream and an abundance of fuel at sensor 2 on bank 2 of the engine.

How do you fix a high voltage O2 sensor?

The number one most common repair for this problem is replacing the O2 Sensor itself. Another repair would be to

replace the wiring or connection for Bank 1, Sensor 2

. If the catalyst is the problem, replace the catalytic converter. Replace the fuel injector if it is leaking.

How do you fix a O2 sensor code?

Deceptive Oxygen Sensor Codes

Engine vacuum leaks that create a lean exhaust condition

. Mass airflow sensor failure that creates a rich exhaust condition. Manifold air pressure sensor failure that creates a rich exhaust condition. … A defective fuel pressure regulator.

What does it mean bank 2 sensor 2?

Bank 2 is the set of cylinders that does not have number one cylinder. Sensor 1 is the sensor before the catalytic converter which the computer uses to make fuel ratio calculations. Sensor 2 is

the sensor that comes after the catalytic converter

and is mainly used for onboard emissions testing.

Why does O2 sensor read High Voltage?

The high voltage condition from the O2 sensor is indicating

a lack of oxygen in the exhaust or other related problems

, such as a leaking fuel injector or a broken up catalyst inside.

Can I drive with a P0138 code?

It is okay to drive a vehicle

with P0138 for a short period of time, but driving with this code for an extended period of time can damage the catalytic converter(s).

Can bad spark plugs cause O2 sensor code?

When a

misfire

occurs due to bad spark plugs, the unburned fuel may trick the O2 sensors. The O2 sensor will then regulate the fuel mixture and you may get a lean mixture. This can cause rough idle and even more misfires on other cylinders.

Can you drive with a bad O2 sensor?

Can You Drive With A Bad Oxygen Sensor?

Yes

, you can drive with a bad oxygen sensor if you can still start your engine and feel little difficulty driving. But don't leave it alone for over a couple of days, as it might cause safety problems and lead to the malfunction of other parts of your vehicle.

Can AutoZone test my O2 sensor?

Of course, if you have questions about your O2 sensors or anything else automotive, our knowledgeable AutoZone associates are always ready to help.

Where is the bank 2 sensor?

The oxygen sensor or Air/Fuel sensor closest to the engine in the exhaust manifold will always be Sensor 1. The O2 sensor

located in or behind the catalytic converter

will be Sensor 2. On V6 and V8 engines, Sensor 1 will always be on the SAME side as the Number ONE cylinder in the engine's firing order

How can you tell bank 1 and bank 2?

Bank 1 and bank 2 simply refer to either side of the engine.

Check your owner's manual

or a service manual for a positive location of bank 1 and bank 2. Most commonly, bank 1 houses the front most cylinder on the engine cylinder 1, and bank 2 is the opposite side of the engine.

Are bank 1 and bank 2 sensors the same?

Bank One is always the bank where

cylinder number one is located. … Bank Two is the passenger side. Sensor 1 on Corvettes is always the sensor that is closest to the exhaust port of the engine. Bank Two is post catalytic converter.

How do I test an O2 sensor with a multimeter?

The easiest check is to measure the resistance between the two terminals for the heater in the oxygen sensor's connector. The resistance can range from

10-25 ohms

, but check the specs. If it is open or has low resistance, it is probably the sensor.

How do I know if my O2 sensor is bad?

1. A Glowing Check Engine Light. The bright orange Check Engine light in your dashboard will usually glow if you have a bad oxygen sensor. …
2. Bad Gas Mileage. …
3. An Engine That Sounds Rough. …
4. An Emissions Test Failure. …
5. An Older Vehicle.

How do I know if my upstream or downstream oxygen sensor is bad?

1. A Glowing Check Engine Light. The bright orange Check Engine light in your dashboard will usually glow if you have a bad oxygen sensor.
2. Bad Gas Mileage. …
3. An Engine That Sounds Rough.
4. An Emissions Test Failure.
5. An Older Vehicle.