Search results
Results for Rough Idle
Diagnostic Trouble Codes
P0505
Idle Control System Malfunction
Moderate
Powertrain
P0506
Idle Control System RPM Lower Than Expected
Moderate
Powertrain
P0507
Idle Control System RPM Higher Than Expected
Moderate
Powertrain
P2187
System Too Lean at Idle (Bank 1)
Moderate
Powertrain
P2188
System Too Rich at Idle (Bank 1)
Moderate
Powertrain
P0087
Fuel Rail/System Pressure Too Low
High
Powertrain
P0100
Mass Air Flow Circuit Malfunction
Moderate
Powertrain
P0101
Mass Air Flow Circuit Range/Performance
Moderate
Powertrain
P0121
Throttle Position Sensor Range/Performance
Moderate
Powertrain
P0171
System Too Lean (Bank 1)
Moderate
Powertrain
P0172
System Too Rich (Bank 1)
Moderate
Powertrain
P0174
System Too Lean (Bank 2)
Moderate
Powertrain
P0175
System Too Rich (Bank 2)
Moderate
Powertrain
P0300
Random/Multiple Cylinder Misfire Detected
High
Powertrain
P0301
Cylinder 1 Misfire Detected
High
Powertrain
P0302
Cylinder 2 Misfire Detected
High
Powertrain
P0303
Cylinder 3 Misfire Detected
High
Powertrain
P0304
Cylinder 4 Misfire Detected
High
Powertrain
P0305
Cylinder 5 Misfire Detected
High
Powertrain
P0306
Cylinder 6 Misfire Detected
High
Powertrain
P0307
Cylinder 7 Misfire Detected
High
Powertrain
P0308
Cylinder 8 Misfire Detected
High
Powertrain
P0316
Misfire Detected on Startup (First 1000 Revolutions)
High
Powertrain
P0335
Crankshaft Position Sensor A Circuit
High
Powertrain
P0340
Camshaft Position Sensor A Circuit (Bank 1)
High
Powertrain
P0400
Exhaust Gas Recirculation Flow Malfunction
Moderate
Powertrain
P0401
Exhaust Gas Recirculation Insufficient Flow
Moderate
Powertrain
P0402
Exhaust Gas Recirculation Excessive Flow
Moderate
Powertrain
P0403
Exhaust Gas Recirculation Control Circuit
Moderate
Powertrain
P0404
Exhaust Gas Recirculation Control Range/Performance
Moderate
Powertrain
P0405
EGR Sensor A Circuit Low
Moderate
Powertrain
P0406
EGR Sensor A Circuit High
Moderate
Powertrain
P0700
Transmission Control System Malfunction (MIL Request)
High
Powertrain
P0730
Incorrect Gear Ratio
High
Powertrain
P0731
Gear 1 Incorrect Ratio
High
Powertrain
P0732
Gear 2 Incorrect Ratio
High
Powertrain
P0740
Torque Converter Clutch Circuit Malfunction
High
Powertrain
P0741
Torque Converter Clutch Circuit Performance/Stuck Off
High
Powertrain
P0750
Shift Solenoid A Malfunction
High
Powertrain
P0751
Shift Solenoid A Performance/Stuck Off
High
Powertrain
P0752
Shift Solenoid A Stuck On
High
Powertrain
P0753
Shift Solenoid A Electrical
High
Powertrain
P0755
Shift Solenoid B Malfunction
High
Powertrain
P0756
Shift Solenoid B Performance/Stuck Off
High
Powertrain
P0757
Shift Solenoid B Stuck On
High
Powertrain
P0758
Shift Solenoid B Electrical
High
Powertrain
P0780
Shift Malfunction
High
Powertrain
P0781
1-2 Shift Malfunction
High
Powertrain
P0782
2-3 Shift Malfunction
High
Powertrain
C0020
Right Front Wheel Speed Sensor Circuit
High
Chassis
C0025
Left Front Wheel Speed Sensor Circuit
High
Chassis
C0035
Right Rear Wheel Speed Sensor Circuit
High
Chassis
C0040
Left Rear Wheel Speed Sensor Circuit
High
Chassis
Symptoms
Rough Idle
Engine
The engine shakes, vibrates, or runs unevenly when at a stop or in park. RPMs may fluctuate or drop below normal idle sp...
Engine Stalling
Engine
Engine shuts off unexpectedly while driving or at idle. May restart immediately or refuse to start.
Engine Surging at Idle
Engine
Idle RPM climbs and falls rhythmically — engine hunts for a stable idle. Often worse when the engine is cold.
EGR System Issues
Engine
Check engine light related to exhaust gas recirculation. May cause rough idle, hesitation, or failed emissions test.
Hard or Rough Shifting
Transmission
Transmission shifts with a jerk, thud, or clunk instead of smoothly transitioning between gears.
Vibration at Highway Speed
Chassis
Rhythmic shake or vibration felt through the seat, steering wheel, or floorboard at highway speeds. Could be wheels, tir...