Opel Frontera UBS. Manual - part 2333

6E–368

6VE1 3.5 ENGINE DRIVEABILITY AND EMISSIONS

If connections and wiring are OK and DTC P1154
continues to set, replace the Bank 2 HO2S 1.
Reviewing the Failure Records vehicle mileage since the
diagnostic test last failed may help determine how often
the condition that caused the DTC to be set occurs.  This
may assist in diagnosing the condition.

Test Description

Number(s) below refer to the step number(s) on the
Diagnostic Chart.

3. A condition that affects other heated oxygen sensors

indicates probable contamination.  To avoid
damaging replacement sensors, correct the
condition which caused the contamination before
replacing the affected sensors.

5. This step checks for conditions which may cause the

heated oxygen sensor to appear faulty.  Correct any
of the described conditions if present.

8. To avoid damaging replacement sensors, correct the

condition which caused the contamination before
replacing the affected sensors.

DTC P1154 – HO2S Transition Time Ratio Bank 2 Sensor 1

 

Step

Action

Value(s)

Yes

No

1

Was the “On-Board Diagnostic (OBD) System Check”
performed?

—

Go to 

Step 2

Go to 

OBD

System

Check

2

IMPORTANT: If any other DTCs are set (except P1133
and/or P1134), refer to those DTCs before proceeding
with this diagnostic chart.

1. Idle the engine at operating temperature.
2. Operate the vehicle within parameters specified

under “Conditions for Setting the DTC” criteria
included in Diagnostic Support.

3. Using a  Tech 2, monitor “DTC” info for DTC P1154

until the DTC P1154 test runs.

Note the test result.

Does Tech 2 indicate DTC failed this ignition?

—

Go to 

Step 3

Check the

Procedure

Refer to

Diagnostic

Aids

3

Did the Tech 2 also indicate P1133, and/or P1134 test
failed?

—

Go to 

Step 17

Go to 

Step 4

4

Check for leaks at the exhaust pipe joints.

Are the joints leaking?

—

Go to 

Step 5

Go to 

Step 6

5

Tighten the U-bolt nuts at the leaking joints.

Is your action complete?

—

Go to 

Step 2

—

6

Check for gaskets that are damaged or improperly
installed.

Are there damaged or misaligned gaskets?

—

Go to 

Step 7

Go to 

Step 8

7

1. Replace the damaged gaskets.
2. Align the connections.
3. Tighten the connections.

Is your action complete?

—

Go to 

Step 2

—

8

Check for loose exhaust flange connections.

Are the flange connections loose?

—

Go to 

Step 9

Go to 

Step 10

9

Tighten the stud nuts or bolts to specifications.

Is your action complete?

—

Go to 

Step 2

—

10

Check for burned or corroded exhaust pipes.

Are the exhaust pipes burned or corroded?

—

Go to 

Step 11

Go to 

Step 12

11

Replace the exhaust pipes, as required.

Is your action complete?

—

Go to 

Step 2

—

6E–369

6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS

DTC P1154 – HO2S Transition Time Ratio Bank 2 Sensor 1

  (Cont'd)

Step

No

Yes

Value(s)

Action

12

Check for leaks at the exhaust manifold.

Are there leaks at the exhaust manifold?

—

Go to 

Step 13

Go to 

Step 14

13

Tighten the bolts to specifications or replace the
manifold if necessary.

Is your action complete?

—

Go to 

Step 2

—

14

Visually/physically inspect the following items:

D

Ensure that the Bank 2 HO2S 1 is securely
installed.

D

Check for corrosion on terminals.

D

Check terminal tension (at Bank 2 HO2S 1 and at
the PCM).

D

Check for damaged wiring.

Was a problem found in any of the above areas?

—

Go to 

Step 18

Go to 

Step 15

15

1. Disconnect Bank 2 HO2S 1.
2. Ignition “ON”.
3. Using a DVM at the PCM side of the HO2S 1

connector, measure the voltage between the high
signal circuit and ground.
Also measure the voltage between the low signal
circuit and ground.

Are both voltages in the specified range?

3-4 V

Go to 

Step 16

Go to 

Step 19

16

1. With Bank 2 HO2S 1 disconnected, jumper the high

and low (PCM side) signal circuits to ground.

2. Ignition “ON”.
3. Using a Tech 2, monitor the Bank 2 HO2S 1 voltage.

Does the Tech 2 indicate less than 10 mV and
immediately return to about 450 mV when the jumper is
removed?

—

Go to 

Step 21

Go to 

Step 22

17

Replace affected heated oxygen sensors.

NOTE: Before replacing sensors, the cause of the
contamination must be determined and corrected.

D

Fuel contamination.

D

Use of improper RTV sealant.

D

Engine oil/coolant consumption.

Is the action complete?

—

Verify repair

—

18

Repair condition as necessary.

Is the action complete?

—

Verify repair

—

19

Check for faulty PCM connections or terminal damage.

Is the action complete?

—

Verify repair

Go to 

Step 20

20

Repair open, short or grounded signal circuit.

Is the action complete?

—

Verify repair

—

6E–370

6VE1 3.5 ENGINE DRIVEABILITY AND EMISSIONS

DTC P1154 – HO2S Transition Time Ratio Bank 2 Sensor 1

  (Cont'd)

Step

No

Yes

Value(s)

Action

21

Replace Bank 2 HO2S 1.

Is the action complete?

—

Verify repair

—

22

Replace the PCM.

IMPORTANT: The replacement PCM must be
programmed.  Refer to 

On-Vehicle Service in

Powertrain Control Module and Sensors for
procedures.

And also refer to  latest Service Bulletin.

Check to see if the Latest software is released or not.
And then Down Load the LATEST PROGRAMMED
SOFTWARE to the replacement PCM.

Is the action complete?

—

Verify repair

—

6E–371

6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS

Diagnostic Trouble Code (DTC) 

P1167 Fuel System Rich During Decel Fuel Cut Off (Bank 1)

D06R200010

Circuit Description

The powertrain control module (PCM) continuously
monitors the heated oxygen sensor (HO2S) activity for 90
seconds after “closed loop” has been enabled. During the
monitoring period the powertrain control module (PCM)
counts the number of times a rich to lean response is
indicated and adds the amount of time it look to complete
all rich to lean transitions and lean to rich transitions.
This code detects if Bank1 O2 sensor indicated rich
exhaust while in Decel Fuel Cut Off (DFCO) for fuel
control sensors.

Conditions for setting the DTC

D

No related DTCs.

D

The engine coolant temperature is more than 60 

°

C

(140 

°

F).

D

Engine is operating in “closed loop” power enrichment
mode for 3 seconds.

D

While in “power enrichment” mode the oxygen sensor
voltage remains more than 600mV in DFCO.

Action Taken When the DTC Sets

D

The PCM will not illuminate the malfunction
malfunction indicator lamp (MIL).

D

The PCM will store conditions which were present
when the DTC was set as Failure Records only. This
information will not be stored as Freeze Frame data.

Conditions for Clearing the MIL/DTC

D

A history DTC P1167 will clear after 40 consecutive trip
cycles during which the warm up cycles have occurred
without a fault.

D

DTC P1167 can be cleared using the Tech 2 “Clear
Info” function or by disconnecting the PCM battery
feed.

Diagnostic Aids

D

Check for faulty fuel injectors and fuel pump.