P0507: Idle Control System RPM - Higher Than Expected
What Does P0507 Mean?
P0507 is a diagnostic trouble code indicating: Idle Control System RPM - Higher Than Expected. This code relates to the vehicle speed and idle control system. It has been reported in NHTSA complaints across 11 different vehicle models.
The vehicle speed and idle control systems manage engine operation at rest and in motion. The Vehicle Speed Sensor (VSS) provides real-time speed data used for fuel calculations, shift timing, cruise control, ABS, and speedometer display. The Idle Air Control (IAC) system regulates airflow to maintain target idle speed (typically 600-900 RPM). On electronic throttle control vehicles, the ECM uses the throttle body motor directly. When the ECM detects faults in these systems, drivability problems like stalling, surging, incorrect speedometer readings, and cruise control failure are common. Speed sensor failures are often caused by metal debris from internal transmission wear accumulating on the magnetic sensor tip. Idle problems are most commonly caused by carbon buildup in the throttle body restricting airflow.
Symptoms of P0507
- ⚠️ Check engine light on
- ⚠️ Erratic or inoperative speedometer
- ⚠️ Unstable idle — surging, hunting, or stalling
- ⚠️ Cruise control not working
- ⚠️ Transmission shift quality issues
- ⚠️ ABS or traction control warning light
Common Causes
- 🔍 Faulty vehicle speed sensor or idle control valve
- 🔍 Carbon buildup in throttle body
- 🔍 Vacuum leak affecting idle control
- 🔍 Wiring issue in sensor or actuator circuit
- 🔍 ECM or instrument cluster fault
P0507 Reports by Year
Real Owner Reports
From NHTSA complaint database — actual owner descriptions.
"While driving on the highway my 2016 ford focus stalled without warning and would not start until after having it towed. When I go to the gas station after filling the gas tank my vehicle is either hard to start or doesn't start until after waiting a while. This happens often. My check engine ligh"
— Ford Focus owner, 08/27/2022
"I believe it was the fuel system that failed. The safety of myself, my child, and other drivers was at risk. The Ford dealer I spoke to said my vehichle is not affected by the recall that causes this issue (18S32). The auto center I took the car to could not reproduce the incident. The vehicle has n"
— Ford Focus owner, 11/13/2021
"- started shutting shutting off at while in drive. - started having reduced power - started idiling high while driving - initially there was no codes - last night I drove, I put in drive gear but it was delayed so I had to keep moving from park to drive for it to full go into drive - the codes came"
— Chevrolet Malibu owner, 11/27/2025
Source: NHTSA Complaints Database
Most Reported Vehicles for P0507
Based on NHTSA owner complaint data.
| # | Vehicle | Reports |
|---|---|---|
| 1 | FORD FOCUS | |
| 2 | NISSAN PATHFINDER | |
| 3 | CHEVROLET MALIBU | |
| 4 | NISSAN ALTIMA | |
| 5 | NISSAN ROGUE | |
| 6 | HYUNDAI SONATA | |
| 7 | KIA SOUL | |
| 8 | DODGE NITRO | |
| 9 | BMW X3 | |
| 10 | VOLKSWAGEN GTI | |
| 11 | GMC ACADIA |
P0507 Reports by Vehicle
Detailed NHTSA complaint analysis for each vehicle model.
Diagnostic Tips
- For speed sensor codes: check if speedometer works — if not, output speed sensor is likely bad
- For idle codes: clean throttle body first — carbon buildup is #1 cause
- Check for vacuum leaks with smoke machine
- On electronic throttle vehicles, throttle body relearn may be required after cleaning
Common Mistakes to Avoid
- ❌ Replacing idle air control valve without cleaning throttle body
- ❌ Not performing throttle body relearn after cleaning
- ❌ Ignoring vacuum leaks as cause of idle problems
Frequently Asked Questions
Why does my car idle rough after cleaning throttle body?
Can a bad speed sensor cause transmission problems?
How much does a speed sensor cost?
What To Do Next
Possible Fixes
- 🔧 Replace vehicle speed sensor
- 🔧 Clean throttle body
- 🔧 Replace idle air control valve
- 🔧 Repair vacuum leak
- 🔧 Repair wiring/connector
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1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
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2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
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Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.