1995 Honda Prelude VTECFACTORY OEM SERVICE PROCEDURE

Engine Performance DTCS (2.2L)

ENGINE PERFORMANCE DTCS (2.2L)

OEM Code Description
0 (1) Engine Control Module (ECM)
1 Heated Oxygen Sensor (HO2S)
3 Manifold Absolute Pressure (MAP) Sensor
4 Crankshaft Position (CKP) Sensor
5 Manifold Absolute Pressure (MAP) Sensor
6(2) Engine Coolant Temperature (ECT) Sensor
7(2) Throttle Position (TP) Sensor
8 Top Dead Center (TDC) Sensor
9 No. 1 Cylinder Position (CYP) Sensor
10 Intake Air Temperature (IAT) Sensor
12 Exhaust Gas Recirculation (EGR) Valve Lift Sensor
13 Barometric Pressure (BARO) Sensor
14 14 Idle Air Control (IAC) Valve
15 Ignition Output Signal
16 Fuel Injector
17(2) Vehicle Speed Sensor (VSS)
20(3) Electrical Load Detector (ELD)
21(4) Variable Valve Timing And Valve Lift Electronic Control VTEC) Solenoid Valve
22(4) Variable Valve Timing And Valve Lift Electronic Control VTEC) Pressure Switch
23(5) Knock Sensor (KS)
30(3) A/T FI Signal A
31(3) A/T FI Signal B
41 Heated Oxygen Sensor (HO2S) Heater
43 Fuel Supply System
(1) For DTC 0 testing, see NO DTC testing chart.
(2) MIL and D4 indicator light may illuminate simultaneously when DTC 6, 7 or 17 is stored. Diagnose PGM-FI system as necessary, then recheck if D4 indicator light is on. If D4 indicator light is on, repair transmission.
(3) MIL will not illuminate when a malfunction occurs in A/T FI signal or Electrical Load Detector (ELD). MIL will indicate appropriate DTC when Service Check Connector is shorted.
(4) Applies to Valve Lift Electronic Control (VTEC) engine only.
(5) Does not apply to 2.2L SOHC engine.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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