SERVICE MANUAL NUMBER 23
GENERAL SYSTEM DIAGNOSTICS
Diagnostic Trouble Codes
MEFI 1 - Codes for the 454 / 502 Mag MPI and 8.2L MPI Engines
Code Number
Code 14
Code 21
Code 23
Code 33
Code 42
Code 43
Code 51
Code Description
(ECT) Engine Coolant Temperature
(TP) Throttle Position Sensor
(IAT) Intake Air Temperature
(MAP) Manifold Absolute Pressure
(IC) Ignition Control
(KS) Knock Sensor
Calibration Memory Failure
MEFI 2 - Codes for the 7.4L MPI Engines
Code Number
Code Description
Code 14
Code 15
Code 21
Code 22
Code 23
Code 25
Code 33
Code34
Code 41
Code 42
Code 43
Code 44
Code 51
Code 52
(ECT) Engine Coolant Temperature - Low Temperature Indicated
(ECT) Engine Coolant Temperature - High Temperature Indicated
(TP) Throttle Position Sensor - Signal Voltage High
(TP) Throttle Position Sensor - Signal Voltage Low
(IAT) Intake Air Temperature - Low Temperature Indicated
(IAT) Intake Air Temperature - High Temperature Indicated
(MAP) Manifold Absolute Pressure - Signal Voltage High
(MAP) Manifold Absolute Pressure - Signal Voltage Low
(IC) Ignition Control - Open IC Circuit
(IC) Ignition Control - Grounded IC Circuit, Open or Grounded Bypass
(KS) Knock Sensor - Continuous Knock Detected
(KS) Knock Sensor - No Knock Detected
(ECM) Calibration Memory Failure
(ECM) EEPROM Failure
Index
90-861326--1
MARCH 1999
Page 5E-5
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 454 CID, Mercury MerCruiser 502 CID |
| Model Year | 1998, 1999, 2000, 2001 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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