Vauxhall Astra - lamp illuminates sporadically | HELLA

Complaints about insufficient engine power have been received with respect to the aforementioned vehicles.

MIL (malfunction indicator lamp) illuminates sporadically, in addition the following fault codes are set.

· P0171 (air / fuel ratio lean)

· P0300 (misfire on multiple cylinders detected)

· P0303 (cylinder 3 - misfire detected)

· P1300 (EOBD error due to empty tank)

The cause of the aforementioned problem can be a dirty EGR valve (exhaust gas recirculation valve) (figure 1 / 2) and/or an EGR channel that is blocked with impurities

(figure 3) in the intake manifold.

Remedy:

• Release the plug connection and remove the EGR valve
• Check the EGR valve and replace if necessary
• Remove the intake manifold
• Check EGR channels for impurities and clean if necessary (use a suitable tool)
• Install the intake manifold
• Carry out a test drive
• Read the faults using a diagnostic unit and delete them if necessary

Figure 1

Figure 2