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Discussion Starter · #1 ·
Hello,
My 2005 ignis engine speed is spiking while in neutral to around 2000, and while in D/R it goes to around 1300.
The obd scan showed fault code c1122 (EPS), engine speed signal circuit failure.
Does anyone had experience with this kind of symptoms or with that fault code? Anyone knows if its related?

Thanks
 

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99 Tracker, 5 door, 2L, 4x4
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It could be in Limp Mode because ECU has no control - just an example. Engines normally controlled by ECU will run with default timing settings if ECU is unplugged or a sensor is faulty.

The other options are Idle Air Control valve fault or intake air leak.
 

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Discussion Starter · #4 ·
Apparently the c1122 fault code will always appear when the key switch is on and the engine is not running.
When you turn on the engine, the fault code disappears..
That only misled me..
But after reading your tips i checked the iac valve and it was stuck on one position, so thank you for the help
 
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