ENGINE 273 MPFI 280 P Code Description as per ISO/SAE Fault cause MIL / Blink Diag Detection / Customer Effect Probable Trouble area Check Code Tool for BS-III-IV P0117 Engine Coolant Temperature Circuit Low Short Circuit ON 19 YES 1. No effect on starting or drivability. 1) Loose/ Damaged Connections or Intermittent fault. to Ground 2. Radiator fan runs continuously. 2) Sensor supply line Short circuit to Battery/ Ground. 3. Temperature is calculated from a map. 3) Sensor Signal line Short circuit to Battery/ Sensor Supply/ Ground. P0118 Engine Coolant Temperature Circuit High Short Circuit ON 19 YES 1. No effect on starting or drivability. 4) Check the continuity from sensor connector pins to the to Battery/ 2. Radiator fan runs continuously. ECU pins.( ECU pin 44-Sensor pin 1; ECU pin 30- Sensor Signal Error 3. Temperature is calculated from a map. pin 2). 4. Damage to ECU/ Sensor is possible. 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 ECT Sensor. 8) Faulty ECU P0122 Throttle Position Sensor Circuit Low Short circuit ON 11 YES 1. No apprehensive change in driving.2. No fuel cut-off. 1) Loose/ Damaged Connections or Intermittent fault. to Ground/ 2) Sensor supply line Short circuit to Battery/ Ground. Signal Error 3) Sensor Signal line Short circuit to Battery/ Sensor Supply/Ground. P0123 Throttle Position Sensor Circuit High Short Circuit ON 11 YES 1. No apprehensive change in driving. 4) Check the continuity from sensor connector pins to the to Battery 2. No fuel cut-off. ECU pins.( ECU pin 10-Sensor pin 1; ECU pin 6- Sensor Pin 2; ECU pin 42 - Sensor pin 3). 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 TPS Sensor. 8) Faulty ECU. P0130 HO2S1 Sensor Circuit Range/ Performance No Signal ON 28 YES 1. No effect on engine starting. 1) Loose/ Damaged Connections or Intermittent fault. Detected/ 2. Drivability may be effected 2) Sensor supply line Short circuit to Battery/ Ground. Signal Out 3) Sensor Signal line Short circuit to Battery/ Ground. of range 4) Check the continuity from sensor connector pins to the ECU pins.(ECU pin 14- Sensor Pin 2; ECU Pin 31P0131 HO2S1 Sensor Circuit Low Voltage Short Circuit to ON 28 YES 1. No apprehensive feeling in idle. Sensor Pin 3; ECU pin 43- Sensor pin 4). Ground 2. No effect in drivability. 5) Check for back out of pins at both Sensor connector and ECU connector. P0132 HO2S1 Sensor Circuit High Voltage Short Circuit to ON 28 YES 1. No apprehensive feeling in idle. 6) Check for damage of pins at both sensor connector Battery 2. No effect in drivability. and ECU connector. 7) Faulty HO2S1 Sensor. P0134 HO2S1 Sensor Circuit No Activity Detected Signal Error ON 28 YES 1. No apprehensive feeling in idle. 8) Faulty ECU 2. No effect in drivability. P0201 Cylinder 1 Injector Circuit/Open Signal Error ON 12 YES 1. Vehicle acceleration is poor. 1) Loose/ Damaged Connections or Intermittent fault. 2. Idle is not stable. 2) INJ supply line Short circuit to Battery/ Ground. 3. Lambda control is not active. 3) INJ control line Short circuit to Battery/ Ground. 4. Poor startability. 4) Check the continuity from injector connector pins to the ECU pins.(ECU pin 5-Injector 1 Pin; ECU pin 16P0202 Cylinder 2 Injector Circuit/Open Signal Error ON 13 YES 1. Vehicle acceleration is poor. Injector 2 pin). 12 volts should come at the remaining 2. Idle is not stable. individual pins of the injectors. 3. Lambda control is not active. 5) Check for back out of pins at both Sensor connector 4. Poor startability. and ECU connector. 6) Check for damage of pins at both sensor connector and ECU connector. 7) Faulty INJ. 8) Faulty ECU
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