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11.
Engine Diagnostics and Codes
Name
Description
Trouble MIL
Buzzer Reduce Comments
Code
Lamp
RPM
Barometric Sensor
Sensor alerts ECM if barometric measurement is to high or to low.
108 X
Boost Bypass
66034
Boost Control
ECM detects either an over boost or problem with circuit.
66035
X
X
Only applies to supercharged engines.
Buzzer Driver
66007
Call Memory
630
Cam Phaser (W)
ECM sets code if sensor fails diagnostic test.
65570-73
X
X
Limits RPM to 4000. Often caused by high or low engine oil level.
Cam Sensor (W)
ECM sets code if sensor fails diagnostic test.
65723-26
X
Cam Gov Message
ECM sets code if specific OEM controller message is lost.
65560
X
Normally only applies to tow sport applications.
Cam Bus Hardware (1)
ECM sets code when it detects problem with can bus circuit.
65558-59
X
Cam Bus Stbl Cntrl Message
ECM sets code when it detects problem with can bus circuit.
65557
X
Catalyst Efficiency Test
ECM detects failed catalyst efficiency test.
65675-76
X
75 indicates odd bank, 76 even bank.
Change Oil Now/Soon
65555
Coolant Temp Sensor
Sensor fails diagnostic test.
110
X
Coolant Temp Warning
Sensor alerts ECM if coolant temperature is above 220° F.
110
X
Code clears at 95° F. Reduces RPM to 2500.
Coolant Temp Warning Extreme
Sensor alerts ECM if coolant temperature is above 239° F.
110
X
X
X
Code clears at 220° F. Reduces RPM to 2500.
CPU
65580
Crank Sensor
ECM sets code if sensor fails diagnostic test.
636
X
Typically won’t start if code is triggered. Check tightness of
sensor and electrical connections.
Dev Mode Cal
65730
Diagnostic Trouble Code Lamp (1)
66008
Diagnostic Trouble Code Lamp (2)
66009
Diagnostic Trouble Code Lamp (3)
66006
Exhaust Gas Recirculation (EGR)
66016