P0238 Volkswagen -

Question

2008 VW PASSAT 1.9D 310,000 miles (not a typo)
engine runs ok with codes cleared does smoke a little (see milage)

accelerate under load mil light comes on and lots of white smoke and misfire + no power
codes
P0238
P0401
P0113

any ideas what to check first?

Answer 1

Hi there,

P0238 indicates an issue with the boost sensor. Here is a list of possible causes.

P0238 VOLKSWAGEN - Turbo/Super Charger Boost Sensor 'A' Circuit High

Read more: https://www.autocodes.com/p0238_volkswagen.html

P0401 indicates an issue with the EGR. Here is a list of possible causes.

P0401 VOLKSWAGEN - Exhaust Gas Recirculation Flow Insufficient Detected

Read more: https://www.autocodes.com/p0401_volkswagen.html

P0113 indicates an issue with the intake air temp sensor. Here is a list of possible causes.

P0113 VOLKSWAGEN - Intake Air Temperature Sensor 1 Circuit High

Read more: https://www.autocodes.com/p0113_volkswagen.html