What is engine code P0139?
P0139 is the generic OBD-II code showing that during a deceleration fuel shutdown, the O2 (lambda) sensor for sensor 2 bank 1 failed to have a voltage drop below . 2 volts for 7 seconds. This failure indicates that the sensor reaction has been determined to be too late by the engine control module (ECM).
What causes the OBD-II trouble code p0139?
P0139 is the OBD-II generic code indicating that the O2 sensor for bank 1 sensor 2 failed to have a voltage drop below.2 volts for 7 seconds during a deceleration fuel cut off. This failure shows that the engine control module (ECM) has determined the sensor response is too slow. What causes the P0139 code?
When is the p0139 code detected in the ECM?
When is the P0139 code detected? The P0139 code is set when the Engine Control Module (ECM) detects that the rear O2 sensor takes more time to respond between rich and lean than the specified time. The Heated Oxygen Sensor 2 (HO2S), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank.
Can a p0139 error cause a car to stall?
Though Error Code P0139 is not that bad compared to most error codes, pumping fuel upon deceleration is an expensive inconvenience as it can definitely increase the vehicle’s fuel consumption. It may cause the engine to stall when coming to a stop if there is an excessive amount of fuel leaking into the cylinders.
When to set the O2 sensor trouble code?
The ECM cuts all fuel to the engine during deceleration of the engine and the O2 sensors all should respond with a voltage output below .2 volts showing the exhaust stream is high in oxygen content. The code is set if the O2 sensor for bank 1 sensor 2 does not respond to the fuel cutoff for 7 seconds or more.
What does an ODBII p0139 code for a VW mean?
A code P0139 Volkswagen may mean that one or more of the following has happened: The oxygen sensor is faulty The wiring to the sensor is broken / frayed There is an exhaust leak Possible Solutions The simplest thing to do is to reset the code and see if it comes back.
What is code p0138 and p0607?
P0138 is for the O2 sensor. Either shorted or open. P0607 is for ECM problem. Most likely the O2 is the main cause of the problem and the code for a bad ECM is thown in just in case raplacing the O2 sensor or checking the wire harness do not fix the problem.
What does code p0137 mean on a Sebring?
The P0137 code is set when the Engine Control Module (ECM) detects that the rear O2 sensor signal voltage remains excessively low for an extended period of time. The heated oxygen sensor 2 (HO2S), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank.
What does code p0134 mean?
P0134 is a diagnostic trouble code (DTC) for “O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)”.