P0508
Idle Air Control System Circuit Low
2002-2002 Dodge Ram 2500 5.9L I6 Cummins Diesel
Moderate SeverityPowertrainGeneric (SAE)
The 2002 Dodge Ram 2500 is equipped with a 5.9L inline-6 diesel engine. Below you'll find detailed p0508 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Low voltage in IAC circuit.
Symptoms
- Low idle
- Stalling
Common Causes
- Short to ground
- Faulty IAC motor
- Wiring issue
Diagnostic Steps
- Test IAC voltage
- Check for shorts
Repair Notes
Replace IAC or repair wiring.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P0508 on Other Vehicles
Common Questions
What does code P0508 mean on a 2002-2002 Dodge Ram 2500?
P0508 stands for "Idle Air Control System Circuit Low". Low voltage in IAC circuit.
What are the symptoms of P0508 on a Dodge Ram 2500?
Common symptoms of P0508 include: Low idle, Stalling.
What causes P0508 on a 2002-2002 Dodge Ram 2500?
Common causes of P0508 include: Short to ground, Faulty IAC motor, Wiring issue.
Last updated: March 2026