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Nexon Gasoline – EMS ECU Bosch
DTC Troubleshooting Manual
Version: 0.1
Date: 26-08-2017
Prepared By: Sunu S Babu/Yogesh Jadhav
Checked By: Yeshwant Jadhav
Approved By: Satish Kumar
Document Part No: 2921 02 224 A1736
Page: 461 of 1203
Copyright ©
TATA MOTORS Ltd.
This document must not be used in any way, such as copying and redistributing to third parties, without the consent of author.
P0301-92: Cylinder 1 Misfire Detected - Performance or Incorrect Operation
Overview:
ISO Code
P0301-92
Customer Symptom
Poor Drivability.Alternate Cylinder cut Off & Vehicle stall
Fault Effects (On Vehicle)
1. Poor drivability.
2. Misfire / Backfire.
3. Exhaust heat up.
4. Threat to damage catalytic converter & ignition system.
Lamp Status (If Any)
MIL ON after 3 drive cycles
Fault Detection Condition
This fault gets logged if Cylinder 1 Spark plug / Ignition Coil misfire is
detected.
Normal Operating Condition
Proper firing by Ignition Coil A and proper fuel injection by Injectors.
Probable Trouble Area
Injectors/ Ignition Coil A / Spark Plugs, faulty wiring Harness connections,
Clogged Injectors, Faulty Ignition System, HT cables, low compressor
pressure, improper valve clearance, improper valve timing, Faulty ECT
Sensor.
Healing Condition
Engine Running and 3 drive cycles
Fault permanent deletion
1. Poor drivability.
2. Misfire / Backfire.
3. Exhaust heat up.
4. Threat to damage catalytic converter & ignition system.
Component Details:
NA
Preliminary Checks:
1. Faulty Wiring Harness connections of Injector cylinder 1/ Ignition Coil A
2. Clogged Injector cylinder 1
3. Faulty Ignition Coil A /HT Cables / Spark Plugs.
4. Low Compression Pressure
5. Improper valve clearance
6. Improper Valve timing
7. Faulty ECT Sensor