Diagnostic Mode 5: Check Output of Oxygen Sensor Signals

Diagnostic Mode 5: Check Output Of Oxygen Sensor Signals

Function
The static values of the oxygen sensors are indicated via this diagnostic mode.

The values of the individual oxygen sensor signal outputs must reach the specified value or must be within the min.- and max.- limits.

Requirements
- There must not be any DTCs stored in DTC memory, Diagnostic mode 3: Check DTC memory. Diagnostic Mode 3: Check DTC Memory
- Coolant temperature must be at least 80°C, Diagnostic mode 1: Check measuring values; PID 5, Coolant temperature. Diagnostic Mode 1: Check Measured Values

Procedure
- Connect diagnostic tester. [1][2]Reading and Clearing Diagnostic Trouble Codes
- Start engine and let run at idle.
- Under address word 33, select "Diagnostic mode 5: Check output of oxygen sensor signals".
- Select the desired output of oxygen sensor signals "Test-ID XX".

Continuation for all vehicles
- End diagnosis and switch ignition off.

Evaluation test-ID 07: Minimum voltage at sensor for test cycle (Vehicles with engine code AEG)

If the specified value is not reached:
Short circuit to Ground (GND) or open circuit in wiring in oxygen sensor or in wire:
- Check Oxygen Sensor (O2S) and oxygen sensor control before Three Way Catalytic Converter (TWC). Oxygen Sensor Before Catalyst, Aging Check
- Check Oxygen Sensor (O2S) and oxygen sensor control behind Three Way Catalytic Converter (TWC). Oxygen Sensor Before Catalyst, Aging Check

If the specified value is exceeded:
Oxygen sensor not ready for operation
Oxygen sensor heater faulty:
- Check oxygen sensor heater for Oxygen Sensor (O2S) before Three Way Catalytic Converter (TWC). Oxygen Sensor Before Catalyst, Aging Check
- Check oxygen sensor heater for Oxygen Sensor (O2S) behind Three Way Catalytic Converter (TWC). Oxygen Sensor Before Catalyst, Aging Check

Short circuit to B+ or open circuit in wiring in oxygen sensor or in wire:
- Check Oxygen Sensor (O2S) and oxygen sensor control before Three Way Catalytic Converter (TWC). Oxygen Sensor Before Catalyst, Aging Check
- Check Oxygen Sensor (O2S) and oxygen sensor control behind Three Way Catalytic Converter (TWC). Oxygen Sensor Before Catalyst, Aging Check

Evaluation test-ID 08: Maximum voltage at sensor for test cycle (Vehicles with engine code AEG)

If the specified value is not reached:
Oxygen sensor not ready for operation
Oxygen sensor heater faulty:
- Check oxygen sensor heater for Oxygen Sensor (O2S) before Three Way Catalytic Converter (TWC). Oxygen Sensor Before Catalyst, Aging Check
- Check oxygen sensor heater for Oxygen Sensor (O2S) behind Three Way Catalytic Converter (TWC). Oxygen Sensor Before Catalyst, Aging Check

Short circuit to Ground (GND) or open circuit in wiring in oxygen sensor or in wire:
- Check Oxygen Sensor (O2S) and oxygen sensor control before Three Way Catalytic Converter (TWC). Oxygen Sensor Before Catalyst, Aging Check
- Check Oxygen Sensor (O2S) and oxygen sensor control behind Three Way Catalytic Converter (TWC). Oxygen Sensor Before Catalyst, Aging Check

If the specified value is exceeded:
Short circuit to B+ or open circuit in wiring in oxygen sensor or in wire:
- Check Oxygen Sensor (O2S) and oxygen sensor control before Three Way Catalytic Converter (TWC). Oxygen Sensor Before Catalyst, Aging Check
- Check Oxygen Sensor (O2S) and oxygen sensor control behind Three Way Catalytic Converter (TWC). Oxygen Sensor Before Catalyst, Aging Check

Evaluation test-ID 09: Time period between sensor shift procedures (Vehicles with engine code AEG)

If the specified value is exceeded:
Oxygen sensor faulty:
- Check Oxygen Sensor (O2S) and oxygen sensor control before Three Way Catalytic Converter (TWC). Oxygen Sensor Before Catalyst, Aging Check

Evaluation test-ID 01 Bank 1 Sensor 2: rich to lean sensor barrier voltage (Vehicles with engine code AVH, AZG)
Oxygen sensor Specified value:
Bank 1 sensor 2 Fixed value: 0.600 V

If specified value is not obtained:
- Replace Oxygen Sensor (O2S) 2 Bank 1 Behind Three Way Catalytic Converter (TWC) -G130-.
- Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data Diagnostic Mode 4: Reset/Erase Diagnostic Data
- Generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes

Evaluation test-ID 02 Bank 1 Sensor 2: lean to rich sensor barrier voltage (Vehicles with engine code AVH, AZG)

Oxygen sensor Specified value:
Bank 1 sensor 2 Fixed value: 0.600 V

If specified value is not obtained:
- Replace Oxygen Sensor (O2S) 2 Bank 1 Behind Three Way Catalytic Converter (TWC) -G130-.
- Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data. Diagnostic Mode 4: Reset/Erase Diagnostic Data
- Generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes

Evaluation test-ID 07 Bank 1 Sensor 2: Minimum voltage at sensor for test cycle (Vehicles with engine code AVH, AZG)

If the specified value is exceeded:
Oxygen sensor not ready for operation
Oxygen sensor heater faulty:
- Check oxygen sensor heater for Oxygen Sensor (O2S) behind Three Way Catalytic Converter (TWC). Oxygen Sensor Before Catalyst, Aging Check

Short circuit to B+ or open circuit in wiring in oxygen sensor or in wire:
- Check Oxygen Sensor (O2S) and oxygen sensor control behind Three Way Catalytic Converter (TWC). Oxygen Sensor Before Catalyst, Aging Check

Evaluation test-ID 08 Bank 1 Sensor 2: Maximum voltage at sensor for test cycle (Vehicles with engine code AVH, AZG)

If the specified value is not reached:
Oxygen sensor not ready for operation
Oxygen sensor heater faulty:
- Check oxygen sensor heater for Oxygen Sensor (O2S) behind Three Way Catalytic Converter (TWC). Oxygen Sensor Before Catalyst, Aging Check

Short circuit to Ground (GND) or open circuit in wiring in oxygen sensor or in wire:
- Check Oxygen Sensor (O2S) and oxygen sensor control behind Three Way Catalytic Converter (TWC). Oxygen Sensor Before Catalyst, Aging Check

If the specified value is exceeded:
Short circuit to B+ in oxygen sensor or in wire:
- Check Oxygen Sensor (O2S) and oxygen sensor control behind Three Way Catalytic Converter (TWC). Oxygen Sensor Before Catalyst, Aging Check

Evaluation test-ID 129 Bank 1 Sensor 1: Actual value of oxygen sensor voltage (Vehicles with engine code AVH, AZG)

If specified values are not obtained:
- Replace Heated Oxygen Sensor (HO2S) 1 Bank 1 -G39- before catalytic converter.
- Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data. Diagnostic Mode 4: Reset/Erase Diagnostic Data
- Generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes

Evaluation test-ID 130 Bank 1 Sensor 1: Control barrier voltage (Vehicles with engine code AVH, AZG)

If specified values are not obtained:
- Replace Heated Oxygen Sensor (HO2S) 1 Bank 1 -G39- before catalytic converter.
- Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data. Diagnostic Mode 4: Reset/Erase Diagnostic Data
- Generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes

Evaluation test-ID 131 Bank 1 Sensor 1: Dynamic value (Vehicles with engine code AVH, AZG)

If specified values are not obtained:
- Replace Heated Oxygen Sensor (HO2S) 1 Bank 1 -G39- before catalytic converter.
- Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data. Diagnostic Mode 4: Reset/Erase Diagnostic Data
- Generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes

Evaluation test-ID 132 Bank 1 Sensor 1: Oxygen sensor shift via oxygen sensor control behind Three Way Catalytic Converter (TWC) (bank 1 sensor 2) (Vehicles with engine code AVH, AZG)