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ELECTRICALS 212 Sr. No. Displayed DTC Code DTC Description Fault cause Probable trouble Area 62 P0328 - 12 Knock sensor positive line short to battery Circuit short to battery 1) Loose/ damaged connections or intermittent fault. 2) Sensor supply line short circuit to battery/ ground. 3) Sensor signal line short circuit to battery/ ground. 4) Check the continuity from sensor connector pins to the ECU pins. 5) Check for back out of pins at both sensor connector and ECU connector. 6) Check for damage of pins at both sensor connector and ECU connector. 7) Faulty knock sensor. 8) Faulty ECU. 63 P0327 - 11 Knock sensor positive line short to ground Circuit short to ground 1) Loose/ damaged connections or intermittent fault. 2) Sensor supply line short circuit to battery/ ground. 3) Sensor signal line short circuit to battery/ ground. 4) Check the continuity from sensor connector pins to the ECU pins. 5) Check for back out of pins at both sensor connector and ECU connector. 6) Check for damage of pins at both sensor connector and ECU connector. 7) Faulty knock sensor. 8) Faulty ECU. 64 P0171 - 86 Less fuel quantity than required Signal invalid 1. Blocked fuel line. 2. Bad fuel regulator. 3. Blocked/leaking injectors. 4.Injector delay time not correct 5. Air leakage through intake. 65 P0172 - 86 Higher fuel quantity than required Signal invalid 1. Blocked fuel line. 2. Bad fuel regulator. 3. Blocked/leaking injectors 4. Injector delay time not correct. 5. Air leakage through intake. 66 P2187 - 92 More air quantity or less fuel quantity at idle Performance or Incorrect operation 1. Need to check with all the parameters one by one which are contributing for maintaining A/F ratio i.e., check with connectivity, condition of the actuators. 2. Faulty SW/ ECU 67 P2188 - 92 Less air quantity or more fuel quantity at idle Performance or Incorrect operation 1. Need to check with all the parameters one by one which are contributing for maintaining A/F ratio i.e., check with connectivity, condition of the actuators 2. Faulty SW/ ECU