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Matt
Matt, Mechanical Engineer
Category: Ford
Satisfied Customers: 21628
Experience:  BEng hons Mech engineering, in auto industry 22 years
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Hi my car keeps sayingengine service now and I lose power as

Customer Question

Hi my car keeps sayingengine service now and I lose power as I'm driving I've had it put on diagnostic and it came up with p2125:86-6c throttle pedal position switch and code p2138:00-68 can any one help me please I've changed the throttle pedal and throttle body but still dose it thanks
Submitted: 2 years ago.
Category: Ford
Expert:  Matt replied 2 years ago.
Hello

can you tell me what model and year this is please?

also how many miles are on it and when it was last serviced
Customer: replied 2 years ago.

Its a 1.25 zetec 09 plate it has done 40 thousand

Customer: replied 2 years ago.

Its a 1.25 zetec 09 plate it has done 40 thousand i only just bought the vehicle with this problem i dont have any history with the car so dont know if its been serviced thanks

Expert:  Matt replied 2 years ago.
Hello

Ok

if you've replaced the pedal and the throttle then its either an issue with the wiring between the 2 , any chafing damage or damaged insulation could give this issue
or

its an ECU issue

If the wiring looks OK then I'd locate the small earth wires that exit from the main loom and are secured to the engine with ring terminals

these are the ECU earths and must be clean and tight

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