Genie Z-60/34 Service Manual page 144

Section 5 • Fault Codes
FAULT CODES
Code Problem
Adaptive Lean Fault -
141
High Limit (Gasoline)
Adaptive Rich Fault -
142
Low Limit (Gasoline)
Adaptive Learn High
143
(LPG)
Adaptive Learn Low
144
(LPG)
System Voltage Low
161
162
System Voltage High
5 - 8
Cause
Heated Oxygen Sensor wiring
and/or connections open or
shorted OR sensor is faulty
OR there are vacuum or
exhaust leaks OR one or
more fuel injectors faulty or
stuck closed OR fuel quality
is poor OR fuel pressure is
too low.
MAP, IAT or ECT sensors not
in correct position OR wiring
and/or connections for
sensors open or shorted OR
sensor is faulty OR one or
more fuel injectors are stuck
closed OR there is electro-
magnetic interference from a
faulty crankshaft and/or
camshaft
Heated Oxygen Sensor wiring
and/or connections open or
shorted OR sensor is faulty
OR there are vacuum leaks or
exhaust leaks OR fuel quality
is poor OR fuel system
components may be faulty.
Engine wire harness may
have an intermittent short to
5V DC or 12V DC OR fuel
system components may be
faulty.
Battery is faulty OR alternator
is not charging OR battery
supply wiring to ECM is open
or shorted.
Alternator is overcharging the
battery when engine RPM is
greater than 1500 rpm.
Genie Z-60/34
November 2003
Solution
Repair heated oxygen sensor
wiring and/or connections
OR replace sensor OR repair
vacuum and exhaust leaks
OR test the fuel pressure OR
clean or replace the fuel
injectors.
Adjust or replace sensors
OR clean or repair fuel
injectors.
Repair wiring and/or
connections OR replace
sensor OR repair any
vacuum and exhaust leaks
OR replace fuel OR test and
repair the fuel system
components.
Repair short in engine wire
harness OR test and repair
the fuel system components.
Replace battery OR repair
alternator OR repair battery
supply wiring to ECM.
Repair or replace the
alternator.
Part No. 75861
REV A