G270cdi ESP issue help
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Newbie
Joined: Jan 2026
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G270 cdi
G270cdi ESP issue help
Hi everyone,
I drive a G 270 CDI (2005 automatic).
When decelerating (engine braking), the car jerks several times as if it gives short throttle pulses an switches on the abs pump too.
It happens both cold and warm, intermittently.
Live data shows the engine actually injects fuel.
When ESP is off, the issue disappears completely.
Turning ESP back on brings it back.
No fault codes in engine, gearbox, or ESP modules.
Accelerator pedal sensor is new (old one was faulty and replaced).
Thanks for any insight or experience!
Béla
ps: i changed the esp controller but not solved the problem..
I drive a G 270 CDI (2005 automatic).
When decelerating (engine braking), the car jerks several times as if it gives short throttle pulses an switches on the abs pump too.
It happens both cold and warm, intermittently.
Live data shows the engine actually injects fuel.
When ESP is off, the issue disappears completely.
Turning ESP back on brings it back.
No fault codes in engine, gearbox, or ESP modules.
Accelerator pedal sensor is new (old one was faulty and replaced).
Thanks for any insight or experience!
Béla
ps: i changed the esp controller but not solved the problem..
Super Member
Joined: Jun 2025
Posts: 784
Likes: 248
From: USA
Classic ESP interaction. Since the ESP controller swap didn't fix it, the issue is likely a sensor feeding it bad data. Check your wheel speed sensors and tone rings, especially at the rear. A worn or dirty ring can cause a faulty speed signal during decel, making the ESP pump activate incorrectly. Clean and inspect them first.
