Difference between revisions of "16485/P0101/000257"

Revision as of 09:31, 20 March 2014

Mass Air Flow Sensor (G70) faulty
Air Leak(s) after Mass Air Flow Sensor (G70)
Excessive restrictions in the Intake/Exhaust System
- Dirty air filter, clogged snow screen, clogged CAT
Ground Spots corroded or Paint Residue
Wiring and/or Connections from/to Mass Air Flow Sensor (G70) faulty

In MY 1995-2002 (?) in Europe at VW-diesel-cars G70 had the bad reputation of slowly losing his performance, causing loss of power. It's not a matter of defective or breaking down, but it is filthy / dirty (not easy to clean). You can check functionality by making a log in [01-engine], [meas.blocks-08], group 003 (3e gear, full throttle, from 1700-4000rpm)
It is not uncommon for a TDI to set Implausible Signal Mass Air Flow Sensor (G70) faults when the engine performance is reduced due to a mechanical problem. These mechanical problems may include, but are not limited to:
- Faulty electric fuel pump or Restricted fuel filter. See the Fuel Pump Basic Settings for PD, PPD, and CR TDI Engines page for Basic Settings tips after replacement.
- Excessive restrictions in the intake/exhaust system
- Internal camshaft/valve/lifter problems

@@ Line 11: / Line 11: @@
 * Mass Air Flow Sensor (G70) faulty
 * Air Leak(s) after Mass Air Flow Sensor (G70)
-* Intake Air Filter dirty/faulty
+* Excessive restrictions in the Intake/Exhaust System
+** Dirty air filter, clogged snow screen, clogged CAT
 * Ground Spots corroded or Paint Residue
 * Wiring and/or Connections from/to Mass Air Flow Sensor (G70) faulty