DME 5.2
P0130
Oxygen Sensor Ahead of Catalytic Converter (Cylinders 1 - 3) - Intercore Short Circuit or Limited Voltage Increase
Function
To diagnose the readiness for operation of the oxygen sensors, the position of the sensor voltage is evaluated (diagnosis is disabled in the case of certain faults or conditions).
Diagnosis conditions
Diagnostic Trouble Code P0130 is stored by the DME control module when it detects an increase in voltage in the oxygen sensor of between 60 mV and 400 mV for more than 15 seconds and when the voltage of the oxygen sensor after the catalytic converter exceeds 350 mV.
The fault also occurs if the voltage value of a cold oxygen sensor lies in the range -40 mV to +40 mV (intercore short circuit) or if an intercore short circuit is present for 15 seconds and the sensor voltage after the catalytic converter is greater than 350 mV.
Conditions for the diagnosis of the oxygen sensor signals:
- Sensor heating active.
- Oxygen sensing system active.
- Oxygen sensor voltage after catalytic converter > 350 mV.
- No secondary air.
- No diagnosis of fuel tank ventilation system.
- No faults in fuel tank ventilation or secondary air.
NOTE: When DTC P0130 is shedded, a non-shedded fault P1115 will be stored as well. This non-shedded fault is not an actual fault.
Wiring Diagram
BS 21/2 = Jumper plug 21/2 on relay carrier 2
Diagnosis Procedure
1 Check oxygen sensor.
1. Heat the oxygen sensors (road test car under load or run engine without load at high rpm).
2. Connect Porsche System Tester 2 or scan tool and read voltage of oxygen sensor 1 ahead of catalytic converter.
Display: Voltage fluctuations between 100 mV and 800 mV.
-> Oxygen sensor OK.
If a value around 0 V is displayed, a short circuit has occurred between the signal wire and sensor ground.
3. Remove H02S connector 1 ahead of catalytic converter.
4. Connect voltmeter at sleeve to pins 3 and 4.
Display: approx. 450 mV.
- Replace oxygen sensor.
Display: approx. 0 V
- Check wiring harness.
If the wiring harness is OK, remove all oxygen sensor connectors and perform measurement to item 4 on all oxygen sensors.
2 Check wiling harness.
1. Remove all four oxygen sensor connectors.
2. Connect special tool 9616 to wiring harness (DME control module connector).
3. With an ohmmeter, measure resistance between special tool 9616, pin 19, and oxygen sensor connector, pin 4.
Display: 0 - 5 Ohms
4. With an ohmmeter, measure resistance between special tool 9616, pin 46, and oxygen sensor connector, pin 3.
Display: 0 - 5 Ohms
3 Check output stage of DME control module.
1. Connect special tool 9616.
2. Remove HO2S connector 1 ahead of catalytic converter.
3. Connect voltmeter to pins 19 and 46.
4. Switch on the ignition.
Display: approx. 450 mV
If display shows < 400 mV or > 500 mV, replace DME control module.
P0131
Oxygen Sensor Ahead of Catalytic Converter (Cylinders 1 - 3) - Signal Wire Short Circuit to Ground or Incorrect Voltage
Function
To diagnose the readiness for operation of the oxygen sensors, the position of the sensor voltage is evaluated (diagnosis is disabled in the case of certain faults or conditions).
Diagnosis conditions
Diagnostic Trouble Code P0131 is stored by the DME control module when the sensor voltage is below - 150 mV. Conditions for the diagnosis of the oxygen sensor signals:
- Sensor heating active.
* When this fault occurs, DTC's P1115 and P1119 may also be stored in the memory, although these are not actual faults.
** When this fault occurs, all four oxygen sensors are always stored.
NOTE: If DTC P0131 is stored and faults in the sensor heating or in the remaining three oxygen sensors are also indicated, there is probably only one fault in one oxygen sensor.
Wiring Diagram
BS 21/2 = Jumper plug 21/2 on relay carrier 2
Diagnosis Procedure
1 Check wiring harness.
1. Remove all four HO2S connectors.
2. Switch on the ignition.
3. Connect voltmeter at sleeve to pins 3 and 4 of HO2S connector 1 ahead of catalytic converter.
Display: approx. 450 mV
4. Connect voltmeter at sleeve to pin 3 and ground.
Display: approx. 720 mV
If the measurement according to items 3 and 4 does not show the specified values, remove DME control module connector and check wiring for short to ground.
If no short to ground can be detected, replace DME control module.
2 Check oxygen sensor.
1. Remove HO2S connector 1 ahead of catalytic converter.
2. Connect ohmmeter on pin side to pin 3 and to HO2S housing.
Display: infinite Ohms
3. Connect ohmmeter on pin side to pins 3 and 2.
Display: infinite Ohms
4. Connect ohmmeter on pin side to pin 4 and to HO2S housing.
Display: infinite Ohms
5. Connect ohmmeter on pin side to pins 4 and 2.
Display: infinite Ohms
P0132
Oxygen Sensor Ahead of Catalytic Converter (Cylinders 1 - 3) - Short Circuit to B+
Function
To diagnose the readiness for operation of the oxygen sensors, the position of the sensor voltage is evaluated (diagnosis is disabled in the case of certain faults or conditions).
Diagnosis conditions
Diagnostic Trouble Code P0132 is stored by the DME control module when the sensor voltage is continuously above 1 V for more than 0.5 seconds.
Conditions for the diagnosis of the oxygen sensor signals:
- Sensor heating active.
NOTE: In the case of a short circuit to B+ at one oxygen sensor, all four oxygen sensors will always be stored. Furthermore, the fault may cause misfiring.
Wiring Diagram
BS 21/2 = Jumper plug 21/2 on relay carrier 2
Diagnosis Procedure
1 Check wiring harness.
1. Remove all four HO2S connectors.
2. Switch on the ignition.
3. Connect voltmeter at sleeve to pins 3 and 4 of H02S connector 1 ahead of catalytic converter.
Display: approx. 450 mV
4. Connect voltmeter at sleeve to pin 3 and ground.
Display: approx. 720 mV
If the measurement according to items 3 and 4 does not show the specified values, remove DME control module connector and check wiring for short to B+.
If no short to B+ can be detected, replace DME control module.
2 Check oxygen sensor.
NOTE: This check must be performed with the engine cold.
1. Remove HO2S connector 1 ahead of catalytic converter.
2. Connect ohmmeter on pin side to pins 1 and 3 of the HO2S connector.
Display: infinite Ohms
3. Connect ohmmeter on pin side to pins 2 and 3 of the HO2S connector.
Display: infinite Ohms
4. Connect ohmmeter on pin side to pins 1 and 4 of the HO2S connector.
Display: infinite Ohms
5. Connect ohmmeter on pin side to pins 2 and 4 of the HO2S connector.
Display: infinite Ohms
P0134
Oxygen Sensor Ahead of Catalytic Converter (Cylinders 1 - 3) - Interruption of Signal
Function
To diagnose the readiness for operation of the oxygen sensors, the position of the sensor voltage is evaluated (diagnosis is disabled in the case of certain faults or conditions).
Diagnosis conditions
Diagnostic Trouble Code P0134 is stored by the DME control module when the sensor voltage is continuously between 400 mV and 600 mV for more than 5 seconds.
Conditions for the diagnosis of the oxygen sensor signals:
- Sensor heating active.
NOTE: When DTC P0134 is stored, DTC P1115 may be stored as well.
P0154 is also stored at the same time if there is an open circuit to the common sensor ground.
Wiring Diagram
BS 21/2 = Jumper plug 21/2 on relay carrier 2
Diagnosis Procedure
1 Check wiring harness.
1. Remove all four HO2S connectors.
2. Switch on the ignition.
3. Connect voltmeter at sleeve to pins 3 and 4 of HO2S connector 1 ahead of catalytic converter.
Display: approx. 450 mV
4. Connect voltmeter at sleeve to pin 3 and ground.
Display: approx. 720 mV
5. Start engine and run at high speed for three minutes.
6. Connect voltmeter at sleeve to pins 1 and 2.
Display: battery voltage
If the measurement according to items 3, 4 or 6 does not show the specified values, remove DME control module connector and check wiring for continuity.
If no continuity can be detected, repair wiring harness. If continuity exists, replace DME control module.
2 Check function of oxygen sensor.
1. Heat the oxygen sensors (road test car under load or run engine without load at high rpm).
2. Connect Porsche System Tester 2 or scan tool and read voltage of oxygen sensor 1 ahead of catalytic converter.
Display: Voltage fluctuations between 100 mV and 800 mV.
- Oxygen sensor OK.
3 Check oxygen sensor heating.
1. Remove H025 connector 1 ahead of catalytic converter.
2. Connect ohmmeter on pin side to pins 1 and 2.
Display: 1.8 - 2.5 Ohms at 20 °C.
3. Connect ohmmeter on pin side to pin 1 and H025 housing.
Display: infinite Ohms
4. Connect ohmmeter on pin side to pin 2 and H025 housing.
Display: infinite Ohms
P0150
Oxygen Sensor Ahead of Catalytic Converter (Cylinders 4 - 6) - Intercore Short Circuit or Limited Voltage Increase
Function
To diagnose the readiness for operation of the oxygen sensors, the position of the sensor voltage is evaluated (diagnosis is disabled in the case of certain faults or conditions).
Diagnosis conditions
Diagnostic Trouble Code P0150 is stored by the DME control module when it detects an increase in voltage in the oxygen sensor of between 60 mV and 400 mV for more than 15 seconds and when the voltage of the oxygen sensor after the catalytic converter exceeds 350 mV.
The fault also occurs if the voltage value of a cold oxygen sensor lies in the range -40 mV to + 40 mV (intercore short circuit) or if an intercore short circuit is present for 15 seconds and the sensor voltage after the catalytic converter is greater than 350 mV.
Conditions for the diagnosis of the oxygen sensor signals:
- Sensor heating active.
- Oxygen sensing system active.
- Oxygen sensor voltage after catalytic converter > 350 mV.
- No secondary air.
- No diagnosis of fuel tank ventilation system.
- No faults in fuel tank ventilation or secondary air.
NOTE: When DTC P0150 is shedded, a non-shedded fault P1121 will be stored as well. This non-shedded fault is not an actual fault.
Wiring Diagram
BS 21/2 = Jumper plug 21/2 on relay carrier 2
Diagnosis Procedure
1 Check oxygen sensor.
1. Heat the oxygen sensors (road test car under load or run engine without load at high rpm).
2. Connect Porsche System Tester 2 or scan tool and read voltage of oxygen sensor 2 ahead of catalytic converter.
Display: Voltage fluctuations between
100 mV and 800 mV.
->Oxygen sensor OK.
If a value around 0 V is displayed, a short circuit has occurred between the signal wire and sensor ground.
3. Remove H02S connector 2 ahead of catalytic converter.
4. Connect voltmeter at sleeve to pins 3 and 4.
Display: approx. 450 mV.
->Replace oxygen sensor.
Display: approx. 0 V
->Check wiring harness.
If the wiring harness is OK, remove all oxygen sensor connectors and perform measurement to item 4 on all oxygen sensors.
2 Check wiring harness.
1. Remove all four HO2S connectors.
2. Connect special tool 9616 to wiring harness (DME control module connector).
3. With an ohmmeter, measure resistance between special tool 9616, pin 18, and HO2S connector, pin 4.
Display: 0 - 5 Ohms
4. With an ohmmeter, measure resistance between special tool 9616, pin 46, and HO2S connector, pin 3.
Display: 0 - 5 Ohms
3 Check output stage of DME control module.
1. Connect special tool 9616.
2. Remove HO2S connector 2 ahead of catalytic converter.
3. Connect voltmeter to pins 18 and 46.
4. Switch on the ignition.
Display: approx. 450 mV
If display shows < 400 mV or > 500 mV, replace DME control module.
P0151
Oxygen Sensor Ahead of Catalytic Converter (Cylinders 4 - 6) - Signal Wire Short Circuit to Ground or Incorrect Voltage
Function
To diagnose the readiness for operation of the oxygen sensors, the position of the sensor voltage is evaluated (diagnosis is disabled in the case of certain faults or conditions).
Diagnosis conditions
Diagnostic Trouble Code P0151 is stored by the DME control module when the sensor voltage is below -150 mV. Conditions for the diagnosis of the oxygen sensor signals:
- Sensor heating active.
* When this fault occurs, DTC P1115 and P1119 may also be stored in the memory, although these are not actual faults.
** Whenever this fault occurs, all four oxygen sensors are always stored.
NOTE: If DTC P0151 is stored and faults in the sensor heating or in the remaining three oxygen sensors are also indicated, there is probably only one fault in one oxygen sensor.
Wiring Diagram
BS 21/2 = Jumper plug 21/2 on relay carrier 2
Diagnosis Procedure
1 Check wiring harness.
1. Remove all four HO2S connectors.
2. Switch on the ignition.
3. Connect voltmeter at sleeve to pins 3 and 4 of HO2S connector 2 ahead of catalytic converter.
Display: approx. 450 mV
4. Connect voltmeter at sleeve to pin 3 and ground.
Display: approx. 720 mV
If the measurement according to items 3 and 4 does not show the specified values, remove DME control module connector and check wiring for short to ground.
If no short to ground can be detected, replace DME control module.
2 Check oxygen sensor.
1. Remove HO2S connector 2 ahead of catalytic converter.
2. Connect ohmmeter on pin side to pin 3 and to HO2S housing.
Display: infinite Ohms
3. Connect ohmmeter on pin side to pins 3 and 2.
Display: infinite Ohms
4. Connect ohmmeter on pin side to pin 4 and to HO2S housing.
Display: infinite Ohms
5. Connect ohmmeter on pin side to pins 4 and 2.
Display: infinite Ohms
P0152
Oxygen Sensor Ahead of Catalytic Converter (Cylinders 4 - 6) - Short Circuit to B+
Function
To diagnose the readiness for operation of the oxygen sensors, the position of the sensor voltage is evaluated (diagnosis is disabled in the case of certain faults or conditions).
Diagnosis conditions
Diagnostic Trouble Code P0152 is stored by the DME control module when the sensor voltage is continuously above 1 V for more than 0.5 seconds.
Conditions for the diagnosis of the oxygen sensor signals:
- Sensor heating active.
NOTE: In the case of a short circuit to B+ at one oxygen sensor, all four oxygen sensors will always be stored. Furthermore, the fault may cause misfiring.
Wiring Diagram
BS 21/2 = Jumper plug 21/2 on relay carrier 2
Diagnosis Procedure
1 Check wiring harness.
1. Remove all four HO2S connectors.
2. Switch on the ignition.
3. Connect voltmeter at sleeve to pins 3 and 4 of HO2S connector 2 ahead of catalytic converter.
Display: approx. 450 mV
4. Connect voltmeter at sleeve to pin 3 and ground.
Display: approx. 720 mV
If the measurement according to items 3 and 4 does not show the specified values, remove DME control module connector and check wiring for short to B+.
If no short to B+ can be detected, replace DME control module.
2 Check oxygen sensor.
NOTE: This check must be performed with the engine cold.
1. Remove HO2S connector 2 ahead of catalytic converter.
2. Connect ohmmeter on pin side to pins 1 and 3 of HO2S connector.
Display: infinite Ohms
3. Connect ohmmeter on pin side to pins 2 and 3 of HO2S connector.
Display: infinite Ohms
4. Connect ohmmeter on pin side to pins 1 and 4 of HO2S connector.
Display: infinite Ohms
5. Connect ohmmeter on pin side to pins 2 and 4 of HO2S connector.
Display: infinite Ohms
P0154
Oxygen Sensor Ahead of Catalytic Converter (Cylinders 4 - 6) - Interruption of Signal
Function
To diagnose the readiness for operation of the oxygen sensors, the position of the sensor voltage is evaluated (diagnosis is disabled in the case of certain faults or conditions).
Diagnosis conditions
Diagnostic Trouble Code P0154 is stored by the DME control module when the sensor voltage is continuously between 400 mV and 600 mV for more than 5 seconds.
Conditions for the diagnosis of the oxygen sensor signals:
- Sensor heating active.
NOTE: When DTC P0154 is stored, DTC P1119 may be stored as well.
P0134 is also stored at the same time if there is an open circuit to the common sensor ground.
Wiring Diagram
BS 21/2 = Jumper plug 21/2 on relay carrier 2
Diagnosis Procedure
1 Check wiring harness.
1. Remove all four H025 connectors.
2. Switch on the ignition.
3. Connect voltmeter at sleeve to pins 3 and 4 of HO2S connector 2 ahead of catalytic converter.
Display: approx. 450 mV
4. Connect voltmeter at sleeve to pin 3 and ground.
Display: approx. 720 mV
5. Start engine and run at high rpm for 3 minutes.
6. Connect voltmeter at sleeve to pins 1 and 2.
Display: battery voltage
If the measurement according to items 3, 4 or 6 does not show the specified values, remove DME control module connector and check wiring for continuity.
If no continuity can be detected, repair wiring harness. If continuity exists, replace DME control module.
2 Check function of oxygen sensor.
1. Heat the oxygen sensors (road test car under load or run engine without load at high rpm).
2. Connect Porsche System Tester 2 or scan tool and read voltage of oxygen sensor 2 ahead of catalytic converter.
Display: Voltage fluctuations between
100 mV and 800 mV.
->Oxygen sensor OK.
3 Check oxygen sensor heating.
1. Remove HO2S connector 2 ahead of catalytic converter.
2. Connect ohmmeter on pin side to pins 1 and 2.
Display: 1.8 - 2.5 Ohms at 20 °C.
3. Connect ohmmeter on pin side to pin 1 and H025 housing.
Display: infinite Ohms
4. Connect ohmmeter on pin side to pin 2 and H025 housing.
Display: infinite Ohms