isabater

1999 clk 320 with 320k miles (But runs very good)

Check engine light on

Symptoms:
1) Uses up more fuel then normal
2) I reset codes and check engine light comes on when idling never when driving
Or freeway speeds
3) check vacuum lines
4) clean throttle body and map sensor

Check Engine Light Codes Showing Up!

Please give me some advice and tech tips
Thank you!

Code P0105
Manifold Absolute Pressure/Barometric Pressure Circuit

DTC Guide:
1) Faulty MAP sensor
2) Faulty TPS
3) Faulty connection/wiring in MAP sensor circuit
4) Short to reference voltage on signal circuit of Manifold Absolute Pressure
(MAP) sensor

Code P0400
Exhaust Gas Recirculation Flow

DTC Guide:
1) EGR valve is clogged
2) Faulty EGR solenoid
3) Open or short in the Exhaust Gas Recirculation (EGR) circuit
4) Broken or damaged vacuum lines
5) Faulty EGR valve