What to do when a no code sensor fails?
What to do when a no code sensor fails?
All that a diagnostic tech should do to solve a driveability problem was retrieve the trouble code and replace the faulty sensor. Thirty years later, most of us realize that no-code sensor failures are a fact of life.
What happens when the O2 sensor is replaced?
It’s a common problem that when the code refers to the O2 sensor, then the shop simply replaces the sensor. But the problem in many cases is not the O2 sensor. And when the set of them are replaced for no reason, you end up with a car which now has non-OEM sensors, which aren’t as good of quality as what you had in the first place.
When did Bank 1 O2 sensor stop working?
I have a 2002 Chrysler T&C limited. In September 2012, squirrels chewed through the wiring to my bank 1 O2 sensor. After a quick and easy fix, there were no issues or codes. In February 2013, three error codes popped up (P0134, 0138, 0139), and the car was running sluggish and getting poor gas mileage.
How to know if a cam or crank sensor has failed?
If a cam or crank sensor has failed, the check engine light should have illuminated and the computer should have set a code to that effect. Watch the performance on a sensor scan tool. Turn the scanner on, and insert the year, make, model and engine size to bring up the correct sheet.
When to replace sensors and why-counterman magazine?
The sensor’s out put can be checked with a voltmeter, or observed on a scan tool. If there are any drops in the output as the throttle opens, the sensor is bad and needs to be replaced. On some older vehicles, the idle voltage setting of the sensor must be adjusted to a specified voltage.
Which is the most common sensor to be replaced?
The catalyst monitor needs good inputs from both the upstream and downstream O2 sensors to check the operating efficiency. Oxygen sensors are one of the most often replaced sensors. Inputs from the O2 sensors are used by the engine management system to adjust the fuel mixture. This is critical for maintaining low emissions and good fuel economy.
When does a pressure sensor need to be replaced?
If there are any drops in the output as the throttle opens, the sensor is bad and needs to be replaced. On some older vehicles, the idle voltage setting of the sensor must be adjusted to a specified voltage. The Manifold Absolute Pressure (MAP) sensor monitors the pressure differential between intake vacuum and the outside atmosphere.
It’s a common problem that when the code refers to the O2 sensor, then the shop simply replaces the sensor. But the problem in many cases is not the O2 sensor. And when the set of them are replaced for no reason, you end up with a car which now has non-OEM sensors, which aren’t as good of quality as what you had in the first place.
