CAT MXS Intake Valve Actuator Help!!!
Discussion in 'Trucks [ Eighteen Wheelers ]' started by Don2WS, May 23, 2010.
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Intake Valve Actuator Not Responding fault codes (285-07, 286-07, 287-07, 288-07, 289-07, 290-07) are occurring on some engines equipped with a new ('07) one piece design Low Pressure Actuator (LPA) versus the older two piece design Low Pressure Actuator (LPA). These fault codes results in the "Check Engine" lamp being illuminated and can potentially result in an engine derate.
C15 engines built or repaired since September, 2005 (are equipped with the one piece LPA and need to be flash with new software.
Before troubleshooting the engine, look at the release date of the flash file for the engine. The flash file for the engine must be more recent than January 5, 2006. If the flash file for the engine is older than January 6, 2006, flash the engine with the most current flash file
If no active diagnostic codes are present, there is no need for further troubleshooting.
The new software increases the VVA solenoid pull-in current from 6 amps to 8 amps.Cat sdp Thanks this. -
Some of you may want to read over my thread titled "Fault code problem".
Went through the FC #95 pain, but think it started when engine's main wire harness shorted out /cutting wires due to a broken tie wrap. The odds of something like that happening to someone else are slim, but I would sure feel bad if it did happen and I had not mentioned anything. -
i've seen bad sensor out of a box before
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Got a code 385-3 when orange engine light came on. Now the red engine light is on n it's dinging. Need help asap what to do
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Recheck your codes, I have not seen the actuation pressure sensor turn on a red light yet, you may have a new code with the red lamp.cowboy rob Thanks this. -
Fixed it it was the sensor. After I put the new one in the orange light went off. The red engine light is still on n still dinging but didn't throw no codes.
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