P0506 OBD II Trouble Code Idle Air Control System RPM Lower Than Expected - DTC Code

Detailed information on troubleshooting and repairing a p0506 dtc trouble code which refers to Idle Air Control (IAC) System RPM Lower Than Expected. Also includes links to relevant forum topics on the code.

Symptoms of P0506 OBD II Trouble Code

  • A vacuum leak
  • An air restriction in the intake air path or exhuast
  • A faulty positive crankcase ventilation (PCV) valve
  • Damaged/failed/dirty throttle body
  • Internal engine problem
  • Failed PCM

Common Causes of P0506 OBD II Trouble Code

  • 2004 F150 4.6 p0351 p0356 and p0506I have a 2004 Ford F-150 4.6 V8 I?m getting 3 Code?s po351. PO-356and PO-506 please help me I?ve changed the plugs and coil packs and still the same codes... 
  • 2007 Chevy trailblazer v6 / p1400 p0506 anti-skid light onmy engine light is on intermittently and also the anti-skid light is on also intermitenly. how can I fix these troubles :x... 
  • chev colorado crew cab 2004 with 3.5 eng. obd code p0506scan shows a p0506 code, what could this indicate ??... 
  • p0506 engine codeIs there a way to clear the code at home without taking the car to a dealership for them to hook up the code reader? Closest "code reader guy is about 40 miles away.... 
  • 2006 Chevrolet Trailblazer LS 4.2L I6L: P0506 CodeI have a Chevrolet Trailblazer LS 4.2L I6, 4WD with a P0506 Code P0506 - Idle Air Control System RPM Lower Than Expected http://www.obd-codes.com/p0506 Please help. Thank you Joe... 
  • caravan 2006 P0506 smell gas from pipe tailHi there, I really need help! 2006 SXT Grand Caravan 3.8l. innova 3130e scan tool show Generic Pending P0506 (1/1). live data show STFT B1 25-32%, O2 B1S1 show 0.3 to 0.76, O2 B1S2 show around 0.65 to 0.7. Before start engine MAP (inHg) is around 29, once start scan tool reading is around 14 at ... 
  • 2003 Nissan Altima P0506, P0171, & P0174 CodesWould like some help from mechanics that have dealt with this type of issue. My Nissan altima 2003 check engine light went on, and the following 3 codes appeared- P0506, P0171, & P0174. I understood its probably a MAF sensor issue. i did replace it the last time it was damaged (Water wnet up the... 
  • 2004 F150 4.6L V8 P0506Trying to figure out what to do for the error code P0506 - Idle Control System RPM Lower Than Expected. Can't seem to find a website that can tell me WHAT to do - all just tell me what the code is. Two days after replacing the alternator and battery, the truck starts slight erratic idling, sometime... 
  • 04 Explorer 6 cyl. Flex Fuel Error code P0506I know this code is for Idle Control System RPM Lower Than Expected. I need suggestions on ways to fix the problem or what part I need. The check engine light is on and the engine does not have a steady idle sometimes even stalling. Any suggestions? Thanks :?:... 
  • Trouble shooting P0351, P0356, P0506 2004 F150 4.6Receiving codes PO351 Ign coil "A" and PO356 Ign coil "F" and PO506 Air control sys rpm lower than expected. I've recently replaced the battery altenator. I replaced the A & F sparkplugs and coil packs but still receiving all 3 codes. When should I check next?...