What does this code mean?
Actual idle speed is higher than the controller expects under the monitor's conditions. The code does not identify an idle-air valve as a failed part; electronic-throttle vehicles may use a different idle-control architecture. The cited Volkswagen bulletin also addresses idle-diagnostic software strategy.
Sources and interpretation [1]
A code identifies a detected condition, not a part that must automatically be replaced.
Before replacing a part
Compare desired and actual idle speed with temperature and electrical loads recorded. Check related pressure/air-flow codes and the applicable software bulletin. Do not adjust a throttle stop or apply a relearn procedure from another vehicle.
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P0507ISC SYSTEM ï‚·Manufacturer communications
1Original wording in English
NISSAN
Reported code forms P0507
MIL ON WITH DTC P0223, P0507 AND/OR P2135 STORED IN THE ECM IF YOU CONFIRM The MIL is ON and one or more of the following DTCs is stored in the ECM: ï‚· P0223 - TP SEN 1/CIRC-B1 ï‚· P0507 - ISC SYSTEM ï‚· P2135 - TP…
Check vehicle applicability
2A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Sources and interpretation
These explanations are editorial summaries of the linked manufacturer material. PDF page numbers count from the first file page. Original publications are in English; translations are reference aids. A cited edition is not a claim that it is the manufacturer's latest instruction.
- Audi TT Quick Reference Specification Book · October 2013 ↗
Audi of America · PDF page(s) 141 ·
- 01 14 23 / 2034012 · P0106, update programming ↗
Volkswagen Group of America · PDF page(s) 1, 2 ·
Source check date · 2026-10-27
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.