WagonRFix

P0302 on Suzuki Wagon R: Cylinder 2 Misfire Detected

Short answer: P0302 means “Cylinder 2 Misfire Detected”. The car’s computer has found a fault in the Engine system and turns on the Check engine light (MIL). First check: read the code and freeze-frame data with an OBD-II scanner.

Standard OBD-II code Same meaning on all cars (SAE J2012). Not checked against this car’s factory manual.

Code
P0302
System
Engine
Dashboard light
Check engine light (MIL)
Also sold as
Maruti Suzuki Wagon R, Suzuki Karimun Wagon R (Indonesia)
Applies to
Generic OBD-II meaning. Not every code is used by this car.
Confidence
medium (generic OBD-II definition, not checked against the factory manual for this car)
Source
obd-codes.com

Symptoms and when it is set

  1. Check engine light on

Likely causes

  1. Defective ignition coil(s)
  2. Bad spark plug(s), spark plug wires, or spark plug boots
  3. Faulty fuel injector(s)
  4. Malfunctioning fuel delivery system (fuel pump, fuel pump relay, fuel injectors, or fuel filter)
  5. Major engine vacuum leak
  6. EGR valve stuck in the wide open position
  7. Clogged EGR ports

What to check, in order

  1. Read the code and freeze-frame data with an OBD-II scanner
  2. Check the connector and wiring of the part named in the code
  3. Test the part with scanner live data or a multimeter, using the values in the repair manual
  4. Fix the cause, clear the code and test-drive

Related on this car

Same code on other cars

← P0301 P0303 →

Clearing the code does not fix the fault. If it comes back, the problem is still there. For brakes, airbags and steering, see a trained mechanic.