Pontiac Grand Am P0139 Engine Error Code

When you check Pontiac Grand Am car engine light came on code P0139 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However Pontiac 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.

P0139 Pontiac Grand Am engine problem can be occur defective fan clutches are a common and often overlooked cause of engine overheating. The shear characteristics of the clutch fluid gradually deteriorates over time, with an average loss in drive efficiency of about 200 rpm per year. Eventually slippage reaches the point where effective cooling is no longer possible and overheating results. (On average, the life of a fan clutch is about the same as a water pump. If one needs to be replaced, the other usually does too.)

Pontiac Grand Am P0139 OBD-II Diagnostic Powertrain (P) Trouble Code Description Pontiac Grand Am 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 Pontiac Grand Am P0139 Code The reason of Pontiac Grand Am P0139 OBD-II Engine Error Code is P0139 O2 Sensor Circuit Slow Response Bank 1 Sensor 2.

While fuel economy was increased, acceleration was seriously compromised, and the loss of engine vacuum led to a dangerous loss of braking assist when the P0139 Pontiac Grand Am code system was in four-cylinder mode. In addition to these issues, while the company proposed a hydraulically controlled system that could be switched from within the car, the version they implemented had to be manually changed in the engine compartment using hand tools.

Pontiac Grand Am 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 Pontiac Grand Am ? What does a diagnostic reading P0139 mean for Pontiac Grand Am ? How to fix OBD2 Code P0139 for Pontiac Grand Am ? What do we know about P0139 code for Pontiac Grand Am ?