Thread: 300E Check Engine Light is On and California Code flasher is flashing 17 and 18
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Old 01-23-2013, 11:43 AM
Bobcin5859 Bobcin5859 is offline
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Join Date: Apr 2010
Location: Orlando FL
Posts: 20
300E Ckeck Engine Light is OM and California Code flasher is flashing 17 and 18
Thank You MBDOC. I am getting 13.38V DC across the pins of the two white wires in the sensor connector with the engine running.

Also cleared the code 17 and took the following voltage measurements at connector X11, pin 2/3:

Battery Volts 12.3V
With Key off, X11 pin2/3 voltage was 8.48v
With Key on, X11 pin 2/3 voltage was 6.94v
With Engine running in open loop X11 pin2/3 voltage was 6.94v for about a minute.
With Engine running in closed loop mode x 11 pin 2/3 voltage dropped to an oscillating 3.7 to 4.2v

Tracks with 50% of high volts?
Last edited by Bobcin5859; 01-23-2013 at 08:07 PM.
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