5pointslow91

looked it up and couldnt find to much on it, says P0054 HO2S Heater Resistance, that mean 1 of my 02 sensors in my mid pipe is bad? how do i know which 1 is out

MELLOWYELLOW06

I came across thison another forum. Not sure if it helps.

Description:

How does a P0054 code trigger the check engine light? This code will trigger the check engine
light as follows:

The vehicle Powertrain Control Module monitors the oxygen sensor heater control circuit current draw. The check engine light will illuminate when the current requirements are too high or too low.

Possible Causes:
Possible causes for this check engine light code include:
Blown oxygen sensor fuse
Open circuit in oxygen sensor harness
Open circuit internal to oxygen sensor
Open circuit in PCM
Short circuit in oxygen sensor harness
Short circuit internal to oxygen sensor
Short circuit internal to PCM
Diagnostic Help:
To diagnose a P0054 check engine light code we will need to test out the oxygen sensor wiring and also test the circuits through the oxygen sensor itself. The internal processor circuits are a possible cause but are much less likely, so the other areas are thoroughly tested first.