Fault Code Descriptions

FAULT CODE DESCRIPTIONS

Code	Display on DRB-0II	Fault Condition:
11	IGN REFERENCE SIGNAL	No Distributor Reference Signal Picked Up During Cranking.
12	NUMBER OF KEY-ONS SINCE LAST FAULT OR SINCE FAULT WERE ERASED.	Direct Battery Input To SMEC Was Disconnected Within 50- 100 Ignition Key-Ons.
13	MAP PNEUMATIC SIGNAL	No Difference In MAP Sensor Signal Detected.
13	MAP PNEUMATIC CHANGE	No Difference Detected Between MAP Reading And Stored Barometric Pressure Reading.
14	MAP VOLTAGE TOO LOW	MAP Sensor Input Less Than Minimum Acceptable Voltage.
14	MAP VOLTAGE TOO HIGH	MAP Sensor Input More Than Maximum Acceptable Voltage.
15	VEHICLE SPEED SIGNAL	No Distance Sensor Signal Detected W/Road Load Conditions.
16	BATTERY INPUT SENSE	Battery Voltage Sense Input Not Detected With Engine Running.
17	LOW ENGINE TEMP	Coolant Temperature Stays Below Normal Operating Temperature During Vehicle Operation.
21	OXYGEN SENSOR SIGNAL	No Rich Or Lean Signal Is Detected From O2 Sensor Input.
22	COOLANT VOLTAGE LOW	Coolant Temp. Sensor Input Below Minimum Acceptable Voltage.
22	COOLANT VOLTAGE HIGH	Coolant Temp. Sensor Input Above Maximum Acceptable Voltage.
24	TPS VOLTAGE LOW	TPS Sensor Output Less Than Minimum Acceptable Voltage.
24	TPS VOLTAGE HIGH	TPS Sensor Output More Than Maximum Acceptable Voltage.
25	AIS MOTOR CIRCUITS	Shorted Condition Detected In One Or More AIS Control Circuits.
26	INJ 1 PEAK CURRENT OR INJ 2 PEAK CURRENT	High Resistance Detected In INJ 1 Injector Bank Circuit. High Resistance Detected In INJ 2 Injector Bank Circuit.
27	INJ 1 CONTROL CIRCUIT OR INJ 2 CONTROL CIRCUIT	INJ 1 And INJ 2 Injector Banks Output Driver Stages Do Not Respond Correctly To SMEC Control Signals.
31	PURGE SOLENOID CKT	Open Or Shorted Condition Is Detected In Purge Solenoid Ckt.
32	EGR SOLENOID CIRCUIT	Open Or Short Is Detected In EGR Solenoid Circuit (CA Only).
32	EGR SYSTEM FAILURE	SMEC Did Not Detect Required Air/Fuel Change During Diagnostic Test (CA Only).
33	A/C CLUTCH RELAY CKT	Open/Shorted Condition Detected In A/C Clutch Relay Circuit.
34	S/C SERVO SOLENOIDS	Open/Shorted Condition Detected In Speed Control Vacuum Or Vent Solenoid Circuits.
35	RADIATOR FAN RELAY	Open/Shorted Condition Detected In Radiator Fan Relay Circuit.
36	WASTEGATE SOLENOID	Open/Shorted Condition Dected In Turbocharger Wastegate Control Solenoid Circuit.
41	CHARGING SYSTEM CKT	Output Driver Stage Does No Respond Correctly To Voltage Regulator Control Signal.
42	ASD RELAY CIRCUIT OR Z1 VOLTAGE SENSE	Open Or Shorted Condition Detected In Asd Relay Circuit No Battery Voltage Sensed When Asd Relay Is Energized
43	IGNITION CONTROL CIRCUIT	Output Driver Stage For Ignition Coil Does Not Respond Properly To Dwell Control Signal.
44	FJ2 VOLTAGE SENSE	No FJ2 Voltage Present At Logic Board During SMEC Operation.
45	BOOST LIMIT EXCEEDED	MAP Reading Above Overboost Limit Detected During Engine Operation.
46	BATTERY VOLTAGE HIGH	Battery Voltage Sense Input More Than Target Charging Voltage During Engine Operation.
47	BATTERY VOLTAGE LOW	Battery Voltage Sense Input Less Than Target Charging Voltage During Engine Operation.
51	LEAN F/A CONDITION	Oxygen Sensor Input Indicates Lean Air/Fuel Ratio During Engine Operation.
52	RICH F/A CONDITION	Oxygen Sensor Input Indicates Rich Air/Fuel Ratio During Engine Operation.
53	INTERNAL SELF-TEST	SMEC Detects Internal Failure.
54	SYNC PICK-UP SIGNAL	Fuel Synchronization Signal Not Detected During Engine Rotation.
55	"	Completion Of Fault Code Display By Check Engine Light.
61	BARO READ SOLENOID	Open/Shorted Condition Dected In Baro Read Solenoid Circuit.
62	EMR MILEAGE ACCUM	Attempt Is Unsuccessful To Update EMR Mileage In SMEC EEPROM (Trucks Only).
63	EEPROM WRITE DENIED	Attempt Is Unsuccessful To Write To An EEPROM Location By SMEC.
N/A	FAULT CODE ERROR	DRB-II Does Not Recognize Fault Identification.