2004 Vauxhall Zafira - Spanner light

Zafira Sri dti Problem
The Problem
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Chicken D

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Spanner light
Dec 9, 2016 (3 years ago)
The car starts from cold ,but when warm the spanner light comes on and the car either cuts out ,which you can restart after switching off ignition, ore will go int limp mode.
Tested with meter and code po638 ,electronic throttle open circuit/ control voltage low.
What's the possible problem.
Electronic throttle unit, or something else.

Car: Vauxhall Zafira
Variant: Sri dti
Year: 2004
Category: Electrics, ECU, Warnings & Lights
Recalls: Vauxhall Zafira Recalls
More: Vauxhall Zafira Problems
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whittingehame
Fixes: 12,189
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Dec 9, 2016 (3 years ago)
Could be the throttle body , wiring to same , or also check the throttle pedal / wiring plug .
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