1 Oxygen Sensor "A" (Primary)
defective circuit or unplugged / defective sensor
2 Oxygen Sensor "B"
defective circuit or unplugged / defective sensor
3 MAP Sensor (Manifold Absolute Pressure)
defective circuit or unplugged / defective sensor
4 CKP Sensor (Crankshaft Position Sensor)
defective circuit or unplugged / defective sensor
5 MAP Sensor (Manifold Absolute Pressure)
mechanical problem / disconnected piping
6 ECT Sensor (Engine Coolant Temperature)
defective circuit or unplugged / defective sensor
7 TP Sensor (Throttle Position)
defective circuit or unplugged / defective sensor
8 TDC Sensor (Top Dead Center)
defective circuit or unplugged / defective sensor
9 CYP Sensor (Cylinder)
defective circuit or unplugged / defective sensor
10 IAT Sensor (Intake Air Temperature)
defective circuit or unplugged / defective sensor
12 EGR Lift Sensor (Exhaust Gas Recirculation)
defective circuit or unplugged / defective sensor
13 BARO Sensor (Atmospheric Pressure)
defective circuit or unplugged / defective sensor
14 IAC Valve (Idle Air Control)
defective circuit or unplugged / defective sensor
15 Ignition Output Signal
missing or defective ignition output signal
16 Fuel Injector System
defective circuit or unplugged / defective fuel injector
17 VSS (Vehicle Speed Sensor)
defective circuit or unplugged / defective sensor
19 Automatic Transmission Lock Up Control Solenoid Valve
defective circuit or unplugged / defective solenoid valve
20 Electrical Load Detector
defective circuit or unplugged / defective sensor
21 VTEC Solenoid Valve
defective circuit or unplugged / defective solenoid valve
22 VTEC Oil Pressure Switch
defective circuit or unplugged / defective oil pressure switch
23 KS (Knock Sensor)
defective circuit or unplugged / defective sensor
30 Automatic Transmission Signal: "A" / SEAF / SEFA / TMA or TMB
defective circuit or unplugged / defective sensor
31 Automatic Transmission Signal "B"
defective circuit or unplugged / defective sensor
41 Primary Oxygen Sensor - Heater
circuit malfunction
43 Fuel Supply System
defective or malfunctioning fuel supply system
45 System Too Lean or Too Rich
malfunction in the fuel monitoring systems
48 LAF Sensor (Lean Air Fuel)
defective circuit or unplugged / defective sensor
54 CKF Sensor (Crankshaft Speed Fluctuation)
defective circuit or unplugged / defective sensor
58 TDC Sensor 2 (Top Dead Center)
defective circuit or unplugged / defective sensor
61 Oxygen Sensor, Heated - Sensor 1 (Primary)
high voltage, low voltage, or slow response
63 Oxygen Sensor, Heated - Sensor 2 (Secondary)
high voltage, low voltage, or slow response
65 Oxygen Sensor Heater (Secondary)
malfunctioning or defective oxygen sensor heater
67 Catalyst system Efficiency Below Threshold
malfunctioning or defective catalyst system
70 Automatic Transmission
malfunction with the automatic transmission controls
71 Cylinder 1 Misfire or a Random Misfire
a condition is present that is creating a cylinder misfire
72 Cylinder 2 Misfire or a Random Misfire
a condition is present that is creating a cylinder misfire
73 Cylinder 3 Misfire or a Random Misfire
a condition is present that is creating a cylinder misfire
74 Cylinder 4 Misfire or a Random Misfire
a condition is present that is creating a cylinder misfire
75 Cylinder 5 Misfire or a Random Misfire
a condition is present that is creating a cylinder misfire
76 Cylinder 6 Misfire or a Random Misfire
a condition is present that is creating a cylinder misfire
80 Exhaust Gas Recirculation
insufficient flow detected
86 ECT Sensor (Engine Coolant Temperature)
circuit range / performance problem
90 Evaporative Emission Control System
leak detected in the fuel tank area
91 Fuel Tank Pressure Sensor
low input
92 Evaporative Emission Control System
insufficient purge flow
