Note: Allpar does not take responsibility for the veracity of any information or opinions here, does not claim expertise, and is not responsible for any consequences. Please proceed at your own risk.

Dodge ambulances

Mopar squads, 1980-2000

Oxygen sensor issues

oxygen sensorThe oxygen sensor measures the amount of oxygen in the exhaust, telling the computer whether there is too much or too little fuel being injected. In four cylinder cars, there are usually two sensors — one up front, and a second sensor that checks on the first and on the efficiency of the catalytic converter. In cars with V-type engines, there can be two banks of sensors, one for each bank of cylinders. There are separate codes for each sensor - bank 1 and bank 2, sensor 1 (forward) and sensor 2 (aft).

In some cases, oxygen sensor codes are thrown when there really is a problem somewhere else. Sometimes they are thrown when there is an issue with the wiring or grounding.

Oxygen sensor heaters

Some cars have two banks of oxygen sensors. The oxygen sensor is heated at startup to get it functioning properly as quickly as possible — hence the "heater control circuit" errors.

Other oxygen sensor error codes

“Slow response” indicates a “lazy” sensor which should be replaced. “Heater performance” errors involve the built in electric sensor heater which gets it into operating mode more quickly.

State of the Hemi, 2022

Even Demon test cars live to be broken

FCA racks in NEMPA awards

More Mopar Car
and Truck News

We make no guarantees regarding validity or accuracy of information, predictions, or advice — see the terms of use and privacy policy. Copyright © 1994-2000, David Zatz; copyright © 2001-2017, Allpar LLC (except as noted, and press/publicity materials); all rights reserved.

Spread the word via or Facebook!
Dodge, Jeep, Chrysler, Ram, and Mopar are trademarks of Fiat Chrysler Automobiles.

Dodge ambulances Mopar squads, 1980-2000