I do not ever recall seeing this question!
Be forewarned though, the base diagnostic trouble code (DTC) descriptions are very short & cryptic.
But it's a good start to identifying the components/sensors/readings that are involved.
See "Related Links" below for 2 sources of Ford OBD codes listings...
Try here, http://www.troublecodes.net/technical/
The Mercury Sable and the Ford Taurus will have DOC in printed on the engine if they are dual overhead cam engines. The symbol should be on the top of the engine.
The collection of "Related Questions" below provide excellent coverage to the various aspects of the EGR/secondary air system problems on Taurus/Sables.Start with the question regarding the 401 check engine light "diagnostic trouble code" (DTC). Lots of great information to jump-start the trouble-shooting, diagnostics and fixing efforts.
Diagnostic Trouble Code (DTC) P0303: Engine Misfire Detected (Cylinder 3)
I have a 1998 Ford Taurus with the check engine light on, i received a diagnostic code of 7441, which they indicated i needed transmission fluid, but when i checked in park,hot and idling it indicated full..how should i address this code
Engine cylinder ( # 2 ) misfire has been detected
Could be sucking air into intake.
That is a check engine light. It could be many things but it needs to be hooked to a diagnostic machine to determine what the problem is.
DTC P3081 - Engine Coolant temp too low
Diagnostic trouble code
Trouble code P0302 means:Cylinder 2 misfire detected
The trouble code P1131 for a Ford Taurus indicates a problem with the air-fuel ratio sensor, specifically that the sensor is reporting a lean condition (too much air, not enough fuel) in the engine's exhaust. This can be caused by various issues, such as a vacuum leak, a malfunctioning fuel injector, or problems with the mass airflow sensor. Addressing the underlying cause is essential to ensure proper engine performance and efficiency. It's advisable to perform a thorough diagnostic to pinpoint the exact issue.
To check the trouble codes on a 1992 Mercury Topaz XR-5, you need to use an OBD-I diagnostic tool or a paperclip to connect the diagnostic connector pins. Locate the diagnostic connector, usually found near the driver's side under the dashboard. By connecting the appropriate pins, you can trigger the check engine light to flash a series of codes that correspond to specific issues. Make sure to refer to a code chart for interpreting the flashes.