Dacia Solenza 2004, Repair Manual

Page: 145 / 891

IGNITION AND INJECTION
17
17 - 51
DF 106
PRESENT
OR
MEMORIZED
RECOMME NDATI ONS
Note any other functional failures.
Fix any other possible failures. AFTER
REPARATION
Apply this diagnostic if the failure is present or memorized.
CATALYST FUNCTIONAL FAILURE
It shows an incoherent information received before and after catalyst by
means of the two oxygen sensors.
Check for leakage on exhaust line.
Fix it if necessary.
Perform a visual checking of the catalyst condition. O deformation may be the explanation for its
non-operation.
Check if the catalyst has not previously suffered thermal shocks.
If cold water is getting on a warm catalyst it may cause its damaging.
Check for oil or cooling fluid excessive consumption Ask the client if he has used an additive or a
similar product. This type of product may inhibit the catalyst and render it inefficient on short or
long term.
Check if there was any combustion misfires. These may damage the catalyst.
Check during a drive test for any noises during running.
If the damaging cause has been found, you may replace the catalyst.
If you replace the catalyst
without detecting the cause, the new catalyst may be damaged also very quickly.
Diagnostic – Failures interpretation
vnx.su