5 - 8
S-40 • S-45
Part No. 102521
October 2013
Section 5 • Fault Codes
FAULT CODES
Code
Problem
Cause
Solution
242
Crank Sync Noise
Crankshaft position sensor wiring and/or
connections open or shorted OR there is a poor
system ground connection OR sensor is faulty.
235
BP Low Pressure
MAP sensor is faulty OR ECM is faulty.
234
BP High Pressure
MAP sensor is faulty OR ECM is faulty.
232
MAP Low Voltage
Open or shorted wiring and/or connections to MAP
sensor OR sensor is faulty.
231
MAP High Pressure
Open or shorted wiring and/or connections to MAP
sensor OR sensor is faulty.
215
Oil Pressure Low
Faulty oil pressure sensor OR sensor wiring
and/or connections open or shorted OR engine
oil level too low.
Replace oil pressure sensor OR repair sensor
wiring and/or connections OR fill engine oil level
to specification.
214
IAT Higher Than
Expected (2)
Air intake temperature is greater than 210 F with
the engine greater than 1000 rpm OR air intake
system has leaks OR IAT sensor is faulty.
°
213
IAT Higher Than
Expected (1)
Air intake temperature is greater than 200 F with
the engine greater than 1000 rpm OR air intake
system has leaks OR IAT sensor is faulty.
°
212
IAT Low Voltage
IAT sensor wiring and/or connections are open or
shorted OR sensor is faulty OR engine intake air
temperature is too hot.
Repair wiring and/or connections OR replace
sensor OR direct cooler air into air intake.
224
CHT Higher Than
Expected (2)
Coolant temperature at the cylinder head is 250 F.
Engine cooling system is malfunctioning and
overheating the engine OR sensor wires and/or
connections open or shorted OR sensor is faulty
OR coolant level is low.
°
223
CHT Higher Than
Expected (1)
Coolant temperature at the cylinder head is 240 F.
Engine cooling system is malfunctioning and
overheating the engine OR sensor wires and/or
connections open or shorted OR sensor is faulty
OR coolant level is low.
°
Repair engine cooling system problems OR
repair open or shorted wiring to sensor OR
replace sensor OR fill engine coolant level to
specification.
222
CHT/ECT Low Voltage
Engine cooling system is malfunctioning and
overheating the engine OR sensor wires and/or
connections open or shorted OR sensor is faulty
OR coolant level is low.
221
CHT/ECT High Voltage
Engine cooling system is malfunctioning OR
sensor wires and/or connections open or shorted
OR sensor is faulty.
Repair engine cooling system problems OR
repair open or shorted wiring to sensor OR
replace sensor.
211
IAT High Voltage
IAT sensor wiring and/or connections are open or
shorted OR sensor is faulty OR engine intake air
temperature is too cold.
Repair wiring and/or connections OR replace
sensor OR direct warmer air into air intake.
162
System Voltage High
Alternator is overcharging the battery when
engine RPM is greater than 1500 rpm.
Repair or replace the alternator.
161
System Voltage Low
Battery is faulty OR alternator is not charging OR
battery supply wiring to ECM is open or shorted.
Replace battery OR repair alternator OR repair
battery supply wiring to ECM.
Camshaft Sensor Loss
244
Crankshaft position sensor wiring and/or
connections open or shorted OR there is a poor
system ground connection OR sensor is faulty.
243
Never Crank Synced
At Start
Crankshaft position sensor wiring and/or
connections open or shorted OR there is a poor
system ground connection OR sensor is faulty.
Be sure system ground connections are in place
and secure OR repair wiring and/or connections
to sensor OR replace sensor.
Check air intake system for damage and proper
routing of air intake components OR replace the
IAT sensor.
Repair wiring and/or connections to sensor OR
replace MAP sensor.
Replace MAP sensor OR replace the ECM.
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