Opel Various Models - Insufficient engine power | HELLA

If the error described above occurs in conjunction with the following list of fault codes, a possible cause is clogged/blocked EGR channels (exhaust gas recirculation channel).

Fault codes:

• P0171 Mixture too lean
• P0300 Misfire on multiple cylinders identified
• P0301 / P0302 / P0303 / P0304

Misfire identified on cylinders 1/2/3/4

• P1300 Fuel tank empty

In order to exclude a defect with the EGR valve (exhaust gas recirculation valve) and also to exclude any other causes of the fault, a check should first of all be run on the periphery of the EGR system.

If no errors are found here, proceed as follows:

• Read out error memory and delete all existing fault codes
• Dismantle intake manifold as per manufacturer's specifications
• Clean the EGR channels in the intake manifold with the appropriate tools
• Fit intake manifold as per manufacturer's specifications
• Read out error memory and, if necessary, delete all existing fault codes