WagonRFix

P0505 on Suzuki Wagon R: Idle Control System Malfunction

Short answer: P0505 means “Idle Control System Malfunction”. 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
P0505
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
  2. Engine stalls and may not idle unless throttle is depressed
  3. Intermittently stalls when letting off the throttle
  4. Engine may idle too high

Likely causes

  1. Potential causes of an P0505 code include
  2. IAC motor connector is damaged (check connector and pins for damage, and moisture)
  3. One or more IAC circuits open or shorted to ground
  4. One or more IAC circuits are shorted to voltage
  5. IAC has failed
  6. PCM has failed

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

← P0500 P0506 →

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.