ENGINE 273 MPFI 279 DTC LIST FOR TATA NANO: In case of any fault, Diagnostic System helps us to identify the cause, condition, situation or problem. Diagnostic System also suggests corrective action to be taken. Whenever there is an error in vehicle CKNL (service indicator) glows in instrument cluster and informs driver that there are some faults in the vehicle. List of all the Diagnostic Trouble Codes applicable for the 273 MPFI 01 and 273 MPFI 03 engine are given in the table below. The table contains the exact code description may vary depending upon the make/type of the diagnostic tool used. The DTC codes can be read / accessed by using TATADiagnostic Tester. The tool through the OBD connector will communicate with ECU and read the memory areas and display the details. 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 P0030 HO2S1 Heater Control Circuit Range/ Signal Error ON 27 YES 1. Vehicle running in open loop initially for a longer time. 1) Loose/ Damaged Connections or Intermittent fault. Performance 2. No effect on starting and driveability. 2) Sensor supply line Short circuit to Battery/ Ground. 3) Sensor Signal line Short circuit to Battery/ Ground. P0031 HO2S1 Heater Control Circuit Low Short Circuit ON 27 YES 1. Vehicle may run in open loop initially for a longer time. 4) Check for back out of pins at both Sensor connector to Ground 2. No effect on starting and driveability. and ECU connector. 3. Inside ceramic may get damaged due to continuous heating. 5) Check for damage of pins at both sensor connector and ECU connector. P0032 HO2S1 Heater Control Circuit High Short Circuit ON 27 YES 1. Vehicle running in open loop initially for a longer time. 6) Check the continuity from sensor connector pins to the to Battery 2. No effect on starting and driveability. ECU pins.(ECU pin 14- Sensor Pin 2; ECU Pin 31Sensor Pin 3; ECU pin 43- Sensor pin 4.) P0053 HO2S1 Heater Resistance Resistance ON 27 YES 1. Vehicle running in open loop initially for a longer time. 7) Faulty HO2S Sensor. too high 2. No effect on starting. Driveability may get effected during idle & 8) Faulty ECU part load conditions. P0107 ManifoldAbsolute Pressure/Barometric Short Circuit ON 21 YES 1. Starts very rich. 1) Loose/ Damaged Connections or Intermittent fault. Pressure Circuit Low Input to Ground / 2. No apprehensive feeling in vehicle running condition. 2) Sensor supply line Short circuit to Battery/ Ground. No signal 3. No altitude adaptation. 3) Sensor Signal line Short circuit to Battery/ Sensor detected Supply/Ground. 4) Check the continuity from sensor connector pins to the P0108 ManifoldAbsolute Pressure/Barometric Short Circuit ON 21 YES 1. Starts very rich. ECU pins.( ECU pin 22-Sensor pin 4; ECU pin 7-Sensor Pressure Circuit High Input to Battery / 2. No apprehensive feeling in vehicle running condition. 1.) Sensor Supply 3. No altitude adaptation. 5) Check for back out of pins at both Sensor connector 4. damage to sensor/ECU is possible. pin 3; ECU pin 24-Sensor Pin 2; ECU pin 42- Sensor Pin and ECU connector. 6) Check for damage of pins at both sensor connector and ECU connector. 7) Faulty TMAP Sensor. P0112 Intake Air Temperature Sensor Circuit Low Short Circuit ON 22 YES 1. Default temperatuture is taken (20°C). 1) Loose/ Damaged Connections or Intermittent fault. to Ground 2. No effect on driveability. 2) Sensor supply line Short circuit to Battery/ Ground. 3) Sensor Signal line Short circuit to Battery/ Sensor P0113 IntakeAir Temperature Sensor Circuit High Short Circuit ON 22 YES 1. Default temperatuture is taken (20°C). Supply/Ground. to Battery/ 2. No effect on driveability. 4) Check the continuity from sensor connector pins to the Signal error ECU pins.( ECU pin 22-Sensor pin 4; ECU pin 7-Sensor pin 3; ECU pin 24-Sensor Pin 2; ECU pin 42- Sensor Pin 1). 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 TMAP Sensor. 8) Faulty ECU.
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