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Engine not revving?

Tiny
BLESSING EWOBOR
  • MEMBER
  • 2011 MERCEDES BENZ E350
  • V6
  • 2WD
  • AUTOMATIC
  • 244,577 MILES
The vehicle's engine is working very fine but sometimes it goes into limp mode, at this point the engine will not rev even though the gas pedal is pressed. The battery voltage is 14.02V whenever the engine is working.
Below are the scanned results.
What could be the cause?
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Friday, November 10th, 2023 AT 8:29 AM

9 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,323 POSTS
The code # 630900 tells us the engine control module is no good, here is the location and how to change it out. You can get a preprogrammed unit by searching Google or Ebay. Once the unit is replaced clear all codes in the CAN before you try starting the engine. Check out the images below. Let us know how it goes.
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Friday, November 10th, 2023 AT 10:43 AM
Tiny
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The code is stored not current, could it still has effect. Thank you sir.
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Friday, November 10th, 2023 AT 7:11 PM
Tiny
KEN L
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Can you clear the codes and try to start the engine to see if it comes back? You may need to try and drive it, also I have seen a dirty through bore cause this problem as well if the code doesn't come back.

Here are two guides to help us fix it:

https://www.2carpros.com/articles/throttle-actuator-service

and

https://www.2carpros.com/articles/reduced-power-limp-mode

Check out the images (below). Please let us know what happens.

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Saturday, November 11th, 2023 AT 10:03 AM
Tiny
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Thank you sir.
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Saturday, November 11th, 2023 AT 10:48 AM
Tiny
KEN L
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You are welcome.
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Monday, November 13th, 2023 AT 8:42 AM
Tiny
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  • 684 POSTS
Good evening,

Please could you help me with wire diagram showing the grounds with the locations?

Thank you
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Monday, November 13th, 2023 AT 8:48 AM
Tiny
KEN L
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Engine grounds? Engine wiring diagrams? If so, here are the engine wiring diagrams and a guide to help with the testing which shows the ground locations:

https://www.2carpros.com/articles/how-to-check-wiring

Check out the images (below). Please let us know what happens.

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Monday, November 13th, 2023 AT 10:14 AM
Tiny
BLESSING EWOBOR
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Thank you very much.
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Monday, November 13th, 2023 AT 11:53 AM
Tiny
KEN L
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You are welcome, we are here to help.
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Tuesday, November 14th, 2023 AT 7:25 AM

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