A L L Diagnostic Trouble Codes ( DTC ): P Code Charts M166 (Throttle valve actuator) : There is a comparison error between actual value potentiometers 1 and 2. (P2135)

2010 Mercedes Benz C 300 4MATIC (204.081) V6-3.0L (272.948)
A L L  Diagnostic Trouble Codes ( DTC ): P Code Charts M166 (Throttle valve actuator) : There is a comparison error between actual value potentiometers 1 and 2. (P2135)
M166 (Throttle valve actuator) : There is a comparison error between actual value potentiometers 1 and 2. (P2135)

Possible cause:
- 1 Throttle valve actuator Affected functions:
- Engine diagnosis - Engine output

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  Test 1: Check component 1 Throttle valve actuator.
1. Check component M166 (Throttle valve actuator).
  Test 1.1: Check component 1 Throttle valve actuator using actual value.
  Test 1.2: Test voltage supply of the potentiometers of component 1 Throttle valve actuator.
1.1. Check component M166 (Throttle valve actuator) using actual value. Warning!Communication with ECU required.

1.2. Test voltage supply of the potentiometers of component M166 (Throttle valve actuator). Test prereuisite
- At least one of the relevant actual values is not okay. - The power supply of component N1 E-FI E control unit is O. Test seuence
- witch off ignition. - Connect socket bo 12-pin to component N1 E-FI E control unit. - easure direct voltage with multimeter between sockets .  and .  of the -pole socket bo tester. - witch on ignition. pecified value
- oltage.....2 uestion
- Is the measurement value O

ES The measurement value is O.Possible cause and remedy
- Check lines from component 1 Throttle valve actuator to component N1 E-FI E control unit. End of test
N The measurement value is not O.Possible cause and remedy
- N1 E-FI E control unit End of test