Speed/Idle Codes
131 OBD-II diagnostic trouble codes in this category.
Showing page 2 of 2 (131 codes total)
| Code | Description | Subsystem | Severity |
|---|---|---|---|
| P1506 | Idle Speed Control Valve Open Solenoid Control Circuit Signal High (Bmw) | Idle Control | Medium |
| P1507 | Idle Speed Control Valve Open Solenoid Control Circuit Signal Low (Bmw) | Idle Control | Medium |
| P1509 | Idle Speed Control Valve Opening Solenoid Control Circuit Electrical (Bmw) | Idle Control | Medium |
| P1510 | Idle Speed Control Valve Stuck (Bmw) | Idle Control | Medium |
| P1550 | Idle Speed Control Valve Closing Solenoid Control Circuit Electrical (Bmw) | Idle Control | Medium |
| P1563 | Cruise Vehicle Speed/Set Speed Difference Too High (Buick) | Vehicle Speed | Medium |
| P1566 | Cruise Control System Engine RPM Too High (Buick) | Idle Control | Medium |
| P1595 | Speed Control Solenoid Circuit Open Or Shorted (Dodge) | Vehicle Speed | High |
| P1596 | Speed Control Switch Always High (Dodge) | Vehicle Speed | Medium |
| P1597 | Speed Control Switch Always Low (Dodge) | Vehicle Speed | Medium |
| P1599 | Engine Stall Or Near Stall Detected (Buick) | Idle Control | Medium |
| P1604 | Control Module Self Test Speed Monitoring (Bmw) | Vehicle Speed | Medium |
| P1643 | Engine Speed Output Circuit (Buick) | Vehicle Speed | Medium |
| P1720 | Vehicle Speed Meter Circuit Malfunction (Ford) | Vehicle Speed | Medium |
| P1725 | Insufficient Engine Speed Increase During Self Test (Ford) | Vehicle Speed | Medium |
| P1726 | Insufficient Engine Speed Decrease During Self Test (Ford) | Vehicle Speed | Medium |
| P1755 | Intermediate Speed Sensor (ISS) Malfunction | Vehicle Speed | Medium |
| P1791 | TCM A/T Vehicle Speed Sensor Circuit Fault (Acura) | Vehicle Speed | Medium |
| P1900 | Output Shaft Speed (OSS) Circuit Intermittent Malfunction (Ford) | Vehicle Speed | Medium |
| P1901 | Turbine Shaft Speed (TSS) Circuit Intermittent Malfunction (Ford) | Vehicle Speed | Medium |
| P200C | Particulate Filter Over Temperature Bank 1 | Engine Protection | Critical |
| P200D | Particulate Filter Over Temperature Bank 2 | Engine Protection | Critical |
| P200E | Catalyst System Over Temperature Bank 1 | Engine Protection | Critical |
| P200F | Catalyst System Over Temperature Bank 2 | Engine Protection | Critical |
| P263E | Glow Plug Control Module 1 Over Temperature | Engine Protection | Critical |
| P263F | Glow Plug Control Module 2 Over Temperature | Engine Protection | Critical |
| P273E | Gear Shift Control Module A Over Temperature | Engine Protection | Critical |
| P273F | Transmission Fluid Temperature Sensor B Over Temperature Condition | Engine Protection | Critical |
| P274F | Transmission Fluid Temperature Sensor C Over Temperature Condition | Engine Protection | Critical |
| P275F | Transmission Fluid Temperature Sensor D Over Temperature Condition | Engine Protection | Critical |
| P277D | Electric/Auxiliary Transmission Fluid Pump B Motor Over Temperature | Engine Protection | Critical |
About Speed/Idle Codes
This page lists all 131 OBD-II diagnostic trouble codes classified under the Speed/Idle category. These codes are stored by your vehicle's onboard computer when a sensor detects a malfunction in the speed/idle system. Each code begins with a letter indicating the system (P for Powertrain, B for Body, C for Chassis, U for Network) followed by four digits that identify the specific fault.
When your check engine light comes on, an OBD-II scanner reads these stored codes to help pinpoint the problem. Generic codes (where the second digit is 0) follow the SAE J2012 standard and mean the same thing on every vehicle. Manufacturer-specific codes (where the second digit is 1) may have different meanings depending on the vehicle brand.
Click any code in the table above to see its full description, possible causes, common symptoms, and step-by-step repair guidance. Use the search box to quickly find a specific code within this category.