ses light
Thread Starter
Staging Lane
Joined: Jul 2004
Posts: 90
Likes: 0
From: Pueblo, CO
ses light Hello everyone and thanks for any help!!!!
I've noticed that my ses light comes on when i get on the gas to pass on the highway, and then turns off the next day. I took my car to Autozone and they told me the codes were P0137 and P0157. What do I need to do???
Thanks
I've noticed that my ses light comes on when i get on the gas to pass on the highway, and then turns off the next day. I took my car to Autozone and they told me the codes were P0137 and P0157. What do I need to do???
Thanks
Sounds like you may have a bad O2 sensor. Here is the info copied directly from service.gm.com...
DTC P0137 or P0157
Circuit Description:
The powertrain control module (PCM) supplies a voltage of about 450 mV between the HO2S high and low signal circuits. The oxygen sensor varies the voltage from approximately 1,000 mV when the exhaust is rich, through approximately 10 mV when the exhaust is lean.
The PCM monitors and stores the heated oxygen sensor (HO2S) voltage information. The PCM evaluates the HO2S voltage samples in order to determine the amount of time the HO2S voltage was out of range. The PCM compares the stored HO2S voltage samples taken within each sample period and determines if majority of the samples are out of the operating range.
The PCM monitors the HO2S voltage for being fixed below a predetermined voltage. If the PCM detects the voltage is below a predetermined voltage, a DTC sets.
Conditions for Running the DTC:
DTCs P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0117, P0118, P121, P0122, P0123, P0200, P0300, P0410, P0440, P0442, P0446, P0452, P0453, P1258, P1415, P1416, or P1441 are not set.
The ignition 1 signal is between 9-18 volts.
The loop status is Closed.
The secondary air injection (AIR) and the catalyst diagnostics are not active.
The throttle position (TP) is between 3-70 percent.
The Fuel Trim Learn is enabled.
The air fuel ratio is between 14.5-14.7 percent.
The fuel tank level remaining is more than 10 percent.
Conditions for Setting the DTC:
The HO2S signal voltage remains below 80 mV.
The conditions are present for 396 seconds.
Action Taken When the DTC Sets
The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.
Conditions for Clearing the MIL/DTC:
The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
Clear the MIL and the DTC with a scan tool.
The PCM sets this DTC when the vehicle runs out of fuel. Inspect the following components:
*The heated oxygen sensor (HO2S) wire--The sensor pigtail may be in contact with the exhaust manifold or with the exhaust system.
*The oxygen supply--An oxygen supply inside the HO2S is necessary for proper operation. The HO2S wires provides the supply of oxygen. Inspect the HO2S wires and connections for breaks or for contamination. Refer to Heated Oxygen Sensor (HO2S) Wiring Repairs in Wiring Systems.
*An intermittent ground--Inspect for an intermittent ground in the signal wire between the connector and the sensor.
*Lean injectors--Perform the Injector Balance Test. Refer to Fuel Injector Balance Test with Tech 2 or Fuel Injector Balance Test with Special Tool .
*Fuel contamination--Water near the in-tank fuel pump inlet can be delivered to the injectors. Refer to Temperature vs Resistance . The water causes a lean exhaust and can set a DTC.
*The fuel pressure--The system will be lean if fuel pressure is low. Refer to Fuel System Diagnosis .
*Exhaust leaks--An exhaust leak near the HO2S can cause a lean condition. Refer to Exhaust Leakage in Engine Exhaust.
DTC P0137 or P0157
Circuit Description:
The powertrain control module (PCM) supplies a voltage of about 450 mV between the HO2S high and low signal circuits. The oxygen sensor varies the voltage from approximately 1,000 mV when the exhaust is rich, through approximately 10 mV when the exhaust is lean.
The PCM monitors and stores the heated oxygen sensor (HO2S) voltage information. The PCM evaluates the HO2S voltage samples in order to determine the amount of time the HO2S voltage was out of range. The PCM compares the stored HO2S voltage samples taken within each sample period and determines if majority of the samples are out of the operating range.
The PCM monitors the HO2S voltage for being fixed below a predetermined voltage. If the PCM detects the voltage is below a predetermined voltage, a DTC sets.
Conditions for Running the DTC:
DTCs P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0117, P0118, P121, P0122, P0123, P0200, P0300, P0410, P0440, P0442, P0446, P0452, P0453, P1258, P1415, P1416, or P1441 are not set.
The ignition 1 signal is between 9-18 volts.
The loop status is Closed.
The secondary air injection (AIR) and the catalyst diagnostics are not active.
The throttle position (TP) is between 3-70 percent.
The Fuel Trim Learn is enabled.
The air fuel ratio is between 14.5-14.7 percent.
The fuel tank level remaining is more than 10 percent.
Conditions for Setting the DTC:
The HO2S signal voltage remains below 80 mV.
The conditions are present for 396 seconds.
Action Taken When the DTC Sets
The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.
Conditions for Clearing the MIL/DTC:
The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
Clear the MIL and the DTC with a scan tool.
The PCM sets this DTC when the vehicle runs out of fuel. Inspect the following components:
*The heated oxygen sensor (HO2S) wire--The sensor pigtail may be in contact with the exhaust manifold or with the exhaust system.
*The oxygen supply--An oxygen supply inside the HO2S is necessary for proper operation. The HO2S wires provides the supply of oxygen. Inspect the HO2S wires and connections for breaks or for contamination. Refer to Heated Oxygen Sensor (HO2S) Wiring Repairs in Wiring Systems.
*An intermittent ground--Inspect for an intermittent ground in the signal wire between the connector and the sensor.
*Lean injectors--Perform the Injector Balance Test. Refer to Fuel Injector Balance Test with Tech 2 or Fuel Injector Balance Test with Special Tool .
*Fuel contamination--Water near the in-tank fuel pump inlet can be delivered to the injectors. Refer to Temperature vs Resistance . The water causes a lean exhaust and can set a DTC.
*The fuel pressure--The system will be lean if fuel pressure is low. Refer to Fuel System Diagnosis .
*Exhaust leaks--An exhaust leak near the HO2S can cause a lean condition. Refer to Exhaust Leakage in Engine Exhaust.
