Fault Messages - Bosch ETT 008.71 Instructions D'emploi

5.5 Installation and initial calibration of the NO sen-
sor
The NO sensor will eventually wear out. The zero point of the NO
measurement is continuously monitored. If deviations occur, the
following error message is displayed: Err 31 NO sensor calibration
is defective. The NO sensor must then be replaced and calibrated
(see Chapter 11.9.4 "Installing new NO sensors" in the operating
instructions for Emissions System Analysis UBF 955/2 Order no.
1 689 981 660).
i Use only original NO sensors.
The NO sensor contains acid. Caution, corrosive!
! The NO sensor is special waste and must be disposed of
in accordance with currently valid regulations. The numeric
disposal key is 35324. In addition to the available means of
public disposal, these components can be sent for disposal
to AA/FEA1 - 495 central repair division.
5.6 Re-adjusting the NO sensor with test gas
– The re-adjustment sequence of the NO sensor is described in
the operating manuals for the relevant test systems.
6.

Fault messages

Any malfunctions detected are indicated by means of an error
message.
An error message is cleared from the display when you acknow-
ledge it. However, it will be displayed again if the cause of the
fault has not been eliminated.
If a number of faults are present at the same time, the next error
message will appear after you have acknowledged one message.
The exhaust-gas measuring instrument is only released again for
operation once all error messages have been displayed.
E r r 1 Poor throughflow
Remedy:
- Blow out sampling hose and probe with compressed air.
- Renew coarse filter GF1.
- Renew intake filter GF2.
- Start measurement again.
If this does not remedy the fault, contact your Bosch After-Sales
Service Center quoting the code number.
E r r 2 Leakage test failed
Remedy:
- Seal leak and start leakage test again.
- Check sampling probe for leaks and fit new probe if necessary.
- Check sampling hose for leaks and fit new hose if necessary.
- Renew filters making sure that they are seated securely.
- Renew intake filter GF2 making sure that it is seated securely.
- Fit filters GF3 and GF4 tightly.
If this does not remedy the fault, contact your Bosch After-Sales
Service Center quoting the code number.
28
E r r 3 HC residues in gas-sampling system or ambient air car-
rying hydrocarbons (e.g. gasoline fumes).
Remedy;
- Start measurement again.
- Pull off sampling hose and blow it out with compressed air in
direction opposite to suction direction.
- Blow out sampling probe with compressed air.
- Renew coarse filter GF1.
- Renew intake filter GF2.
- Hold sampling probe in fresh air and start measurement again.
If this does not remedy the fault, contact your Bosch After-Sales
Service Center quoting the code number.
E r r 4 Activated carbon filter is contamined with HC residues
Remedy:
- Start measurement again.
- Renew activated carbon filter (Figure 1, Item 2).
If this does not remedy the fault, contact your Bosch After-Sales
Service Center quoting the code number.
E r r 7 EEPROM fault
Remedy:
- Setting parameters (section 5)
If this does not remedy the fault, contact your Bosch After-Sales
Service Center quoting the code number.
E r r 9 Re-calibration using test gas is necessary
Remedy:
- Re-calibrate as described in section 5.1.
If this does not remedy the fault, contact your Bosch After-Sales
Service Center quoting the code number.
E r r 11 Adjustment of HC signal not within tolerance band
Remedy:
- Start measurement again and initiate system check.
If this does not remedy the fault, contact your Bosch After-Sales
Service Center quoting the code number.
E r r 12 Adjustment of CO signal not within tolerance band
Remedy:
- Start measurement again and initiate system check.
If this does not remedy the fault, contact your Bosch After-Sales
Service Center quoting the code number.
E r r 13 Adjustment of CO
Remedy:
- Start measurement again and initiate system check.
If this does not remedy the fault, contact your Bosch After-Sales
Service Center quoting the code number.
E r r 14 O
sensor calibration faulty
2
Remedy:
- Check O sensor connector and calibrate (see Section 5.3).
2
- Renew O sensor.
2
If this does not remedy the fault, contact your Bosch After-Sales
Service Center quoting the code number.
signal not within tolerance band
2