Ford Sierra P0139 Engine Error Code

When you check Ford Sierra car engine light came on code P0139 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However Ford manufacturer may have a different definition for the P0139 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

To solve P0139 Ford Sierra problem, you'll have to remove the muffler, crankcase and other components blocking the valve chamber. Then, remove the cylinder head bolts (label for easy re-installation) Adjust the jaws of the valve spring compressor until they touch the top and bottom of the valve chamber Push the tool in to compress the spring and tighten the jaws Remove the retainers and lift out the valves , compressors and springs

Ford Sierra P0139 OBD-II Diagnostic Powertrain (P) Trouble Code Description Ford Sierra car P0139 OBD-II Trouble Code The Heated Oxygen Sensor 2 (HO2S), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. For optimum catalyst operation, the air fuel mixture (air-fuel ratio) Reason For Ford Sierra P0139 Code The reason of Ford Sierra P0139 OBD-II Engine Error Code is P0139 O2 Sensor Circuit Slow Response Bank 1 Sensor 2.

When you turn on the ignition, the Service Engine Soon or Check Engine P0139 Ford Sierra light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions. After this brief flash, the light should stay off while you drive as long as no problems are detected. If P0139 Ford Sierra so, you'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the !

Ford Sierra P0139 Possible Solution :

Disconnected, dirty or fouled spark plugs are common causes for engines that won't start. Spark plugs typically need to be replaced every season or 25 hours of use. You should also check that the spark plug gap is set properly. If your spark plugs look good, problems with your ignition system can also preventing a spark. These can range from a faulty spark plug lead, shorted kill switch or flywheel key damage.

What does fault code P0139 mean for Ford Sierra ? What does a diagnostic reading P0139 mean for Ford Sierra ? How to fix OBD2 Code P0139 for Ford Sierra ? What do we know about P0139 code for Ford Sierra ?