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 MANUALSHONDA2002CIVIC SIREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 68 (PGM-FI SYSTEM)
2002 Honda Civic Si
Section 68 (PGM-FI System)
2002 Honda Civic SiSECTION Section 68 (PGM-FI System)
WARNING: This page is about a different car, the 2006 Acura MDX, 2005 Acura MDX, 2004 Acura MDX, and 2003 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
- Component Location Index
- DTC Codes
- DTC Troubleshooting
- DTC P0036, P0056: Rear Secondary HO2S (Bank 1, Sensor 2) Heater Circuit Malfunction; Front Secondary HO2S (Bank 2, Sensor 2) Heater Circuit Malfunction
- DTC P0097: IAT Sensor 2 Circuit Low Voltage (2003-2004 models)
- DTC P0098: IAT Sensor 2 Circuit High Voltage (2003-2004 models)
- DTC P0107: MAP Sensor Circuit Low Voltage
- DTC P0108: MAP Sensor Circuit High Voltage
- DTC P0111: IAT Sensor Circuit Range/Performance Problem (2005-2006 models)
- DTC P0112: IAT Sensor 1 Circuit Low Voltage (2003-2004 models)
- DTC P0112: IAT Sensor Circuit Low Voltage (2005-2006 models)
- DTC P0113: IAT Sensor 1 Circuit High Voltage (2003-2004 models)
- DTC P0113: IAT Sensor Circuit High Voltage (2005-2006 models)
- DTC P0116: ECT Sensor Range/Performance Problem (2003-2004 models)
- DTC P0116: ECT Sensor Range/Performance Problem (2005-2006 models)
- DTC P0117: ECT Sensor Circuit Low Voltage
- DTC P0118: ECT Sensor Circuit High Voltage
- DTC P0125: ECT Sensor Malfunction/Slow Response (2003-2004 models)
- DTC P0125: ECT Sensor Malfunction/Slow Response (2005-2006 models)
- DTC P0128: Cooling System Malfunction
- DTC P0133, P0153 : Rear A/F Sensor (Bank 1, Sensor 1) Slow Response; Front A/F Sensor (Bank 2, Sensor 1) Slow Response
- DTC P0134, P0154: Rear A/F Sensor (Bank 1, Sensor 1) Heater System Malfunction; Front A/F Sensor (Bank 2, Sensor 1) Heater System Malfunction
- DTC P0135, P0155: Rear A/F sensor (Bank 1, Sensor 1) Heater Circuit Malfunction; Front A/F sensor (Bank 2, Sensor 1) Heater Circuit Malfunction
- DTC P0137, P0157: Rear Secondary HO2S (Bank 1, Sensor 2) Circuit Low Voltage (2003-2004 models); Front Secondary HO2S (Bank 2, Sensor 2) Circuit Low Voltage (2003-2004 models)
- DTC P0137, P0157: Rear Secondary HO2S (Bank 1, Sensor 2) Circuit Low Voltage (2005-2006 models); Front Secondary HO2S (Bank 2, Sensor 2) Circuit Low Voltage (2005-2006 models)
- DTC P0138, P0158: Rear Secondary HO2S (Bank 1, Sensor 2) Circuit High Voltage (2003-2004 models); Front Secondary HO2S (Bank 2, Sensor 2) Circuit High Voltage (2003-2004 models)
- DTC P0138, P0158: Rear Secondary HO2S (Bank 1, Sensor 2) Circuit High Voltage (2005-2006 models); Front Secondary HO2S (Bank 2, Sensor 2) Circuit High Voltage (2005-2006 models)
- DTC P0139, P0159: Rear Secondary HO2S (Bank 1, Sensor 2) Circuit Slow Response (2003-2004 models); Front Secondary HO2S (Bank 2, Sensor 2) Circuit Slow Response (2003-2004 models)
- DTC P0139, P0159: Rear Secondary HO2S (Bank 1, Sensor 2) Slow Response (2005-2006 models); Front Secondary HO2S (Bank 2, Sensor 2) Slow Response (2005-2006 models)
- DTC P0141, P0161: Rear Secondary HO2S (Bank 1, Sensor 2) Heater Circuit Malfunction; Front Secondary HO2S (Bank 2, Sensor 2) Heater Circuit Malfunction
- DTC P0171, P0172, P0174, P0175: Rear Bank (Bank 1) Fuel System Too Lean; Rear Bank (Bank 1) Fuel System Too Rich; Front Bank (Bank 2) Fuel System Too Lean; Front Bank (Bank 2) Fuel System Too Rich
- DTC P0201, P0202, P0203, P0204, P0205, P0206: No. 1 Injector Circuit Malfunction; No. 2 Injector Circuit Malfunction; No. 3 Injector Circuit Malfunction; No. 4 Injector Circuit Malfunction; No. 5 Injector Circuit Malfunction; No. 6 Injector Circuit Malfunction
- DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306: Random Misfire and Any Combination of the Following; No. 1 Cylinder Misfire Detected; No. 2 Cylinder Misfire Detected; No. 3 Cylinder Misfire Detected; No. 4 Cylinder Misfire Detected; No. 5 Cylinder Misfire Detected; No. 6 Cylinder Misfire Detected
- DTC P0301, P0302, P0303, P0304, P0305, P0306: Cylinder Misfire Detected; No. 2 Cylinder Misfire Detected; No. 3 Cylinder Misfire Detected; No. 4 Cylinder Misfire Detected; No. 5 Cylinder Misfire Detected; No. 6 Cylinder Misfire Detected
- DTC P0325: Knock Sensor Circuit Malfunction
- DTC P0335, P0385: CKP Sensor A No Signal; CKP Sensor B No Signal
- DTC P0339, P0389: CKP Sensor A Intermittent Interruption; CKP Sensor B Intermittent Interruption
- DTC P0340: CMP Sensor No Signal
- DTC P0344: CMP Sensor Intermittent Interruption
- DTC P0563: PCM Power Source Circuit Unexpected Voltage
- DTC P0603: PCM Internal Control Module (Keep Alive Memory (KAM) Error)
- DTC P0630: VIN Not Programmed or Mismatch (2005-2006 models)
- DTC P0641, P0651: Sensor Reference Voltage A Malfunction; Sensor Reference Voltage B Malfunction
- DTC P0657: A/F Sensor Relay Circuit Malfunction
- DTC P0685: PCM Power Control Circuit/Internal Circuit Malfunction
- DTC P0700: A/T Control System Malfunction
- DTC P1109: BARO Sensor Circuit Out of Range High (2005-2006 models)
- DTC P1116: ECT Sensor Performance Problem (2005-2006 models)
- DTC P1128: MAP Sensor Signal Lower Than Expected
- DTC P1129: MAP Sensor Signal Higher Than Expected
- DTC P1172, P1174: Rear A/F Sensor (Bank 1, Sensor 1) Out of Range High (2005-2006 models); Front A/F Sensor (Bank 2, Sensor 1) Out of Range High (2005-2006 models)
- DTC P1297: ELD Circuit Low Voltage
- DTC P1298: ELD Circuit High Voltage
- DTC P2195, P 2197: Rear A/F Sensor (Bank 1, Sensor 1) Signal Stuck Lean; Front A/F Sensor (Bank 2, Sensor 1) Signal Stuck Lean
- DTC P2199: IAT Sensor 1, 2 Correlation (2003-2004 models)
- DTC P2227: BARO Sensor Circuit Range/Performance Problem
- DTC P2228: BARO Sensor Circuit Low Voltage
- DTC P2229: BARO Sensor Circuit High Voltage
- DTC P2237, P2240: Rear A/F Sensor (Bank 1, Sensor 1) IP Line High Voltage; Front A/F Sensor (Bank 2, Sensor 1) IP Line High Voltage
- DTC P2238, P2241: Rear A/F Sensor (Bank 1, Sensor 1) IP Line Low Voltage; Front A/F Sensor (Bank 2, Sensor 1) IP Line Low Voltage
- DTC P2243, P2247: Rear A/F Sensor (Bank 1, Sensor 1) VCENT Line High Voltage; Front A/F Sensor (Bank 2, Sensor 1) VCENT Line High Voltage
- DTC P2245, P2249: Rear A/F Sensor (Bank 1, Sensor 1) VCENT Line Low Voltage; Front A/F Sensor (Bank 2, Sensor 1) VCENT Line Low Voltage
- DTC P2251, P2254: Rear A/F Sensor (Bank 1, Sensor 1) VS Line High Voltage; Front A/F Sensor (Bank 2, Sensor 1) VS Line High Voltage
- DTC P2252, P2255: Rear A/F Sensor (Bank 1, Sensor 1) VS Line Low Voltage; Front A/F Sensor (Bank 2, Sensor 1) VS Line Low Voltage
- DTC P2270, P2271, P2272, P2273: Rear Secondary HO2S (Bank 1, Sensor 2) Circuit Signal Stuck Lean (2005-2006 models); Rear Secondary HO2S (Bank 1, Sensor 2) Circuit Signal Stuck Rich (2005-2006 models); Front Secondary HO2S (Bank 2, Sensor 2) Circuit Signal Stuck Lean (2005-2006 models); Front Secondary HO2S (Bank 2, Sensor 2) Circuit Signal Stuck Rich (2005-2006 models)
- DTC P2610: PCM Internal Power Off Timer Performance Problem
- DTC P2627, P2630: Rear A/F Sensor (Bank 1, Sensor 1) LABEL Circuit Low Voltage; Front A/F Sensor (Bank 2, Sensor 1) LABEL Circuit Low Voltage
- DTC P2628, P2631: Rear A/F Sensor (Bank 1, Sensor 1) LABEL Circuit High Voltage; Front A/F Sensor (Bank 2, Sensor 1) LABEL Circuit High Voltage
- DTC P2A00, P2A03: Rear A/F Sensor (Bank 1, Sensor 1) Range/Performance Problem; Front A/F Sensor (Bank 2, Sensor 1) Range/Performance Problem
- DTC U0073: F-CAN Malfunction (Bus-off)
- DTC U0114: F-CAN Malfunction (VTM-4 Control Unit-PCM)
- DTC U0122: F-CAN Malfunction (VSA Modulator-Control Unit-PCM)
- MIL Circuit Troubleshooting
- DLC Circuit Troubleshooting
- Injector Replacement
- A/F Sensor Replacement
- Secondary HO2S Replacement
- ECT Sensor Replacement
- Knock Sensor Replacement
- IAT Sensor 1 Replacement
- IAT Sensor/IAT Sensor 2 Replacement
- CKP Sensor Replacement
- CMP Sensor Replacement
- PCM Replacement
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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.