Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSHONDA1993ACCORD L4-2156CC 2.2L SOHCREPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONMANUFACTURER CODE CHARTSDTC 9ENGINE CONTROL SYSTEM
1993 Honda Accord L4-2156cc 2.2L SOHC
Engine Control System
1993 Honda Accord L4-2156cc 2.2L SOHCSECTION Engine Control System
DTC 9 - Cylinder Position (CYP) Sensor
The sensor consists of a pair of rotors, TDC and CYL, and a pickup for each rotor. Since the rotors are coupled to the camshaft, they turn together as a unit as the camshaft rotates. The CYL sensor detects the position of the No. 1 cylinder as the base for the Sequential injection whereas the TDC sensor serves to determine the injection timing for each cylinder. The TDC sensor also supplies the RPM signal to the ECU.
The Check Engine warning light may come on, indicating a system problem, when, in fact, there is a poor or intermittent electrical connection. First, check the electrical connections, clean or repair connections if necessary.
DTC 9: Cylinder Position (CYP) Sensor (Part 1 Of 2):
DTC 9: Cylinder Position (CYP) Sensor (Part 2 Of 2):
The sensor consists of a pair of rotors, TDC and CYL, and a pickup for each rotor. Since the rotors are coupled to the camshaft, they turn together as a unit as the camshaft rotates. The CYL sensor detects the position of the No. 1 cylinder as the base for the Sequential injection whereas the TDC sensor serves to determine the injection timing for each cylinder. The TDC sensor also supplies the RPM signal to the ECU.
The Check Engine warning light may come on, indicating a system problem, when, in fact, there is a poor or intermittent electrical connection. First, check the electrical connections, clean or repair connections if necessary.
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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.