What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P2177FUEL SYSTEM TOO LEAN AT OFF IDLETHIS CONCERN MAY BE CAUSED BY A/F SENSOR WIRE HARNESS COVER DAMAGE DUE TO BRAKE FLUID SPILLAGE DURING A PRE-VIOUS SERVICE OR REPAIRManufacturer communications
3Original wording in English
MAZDA
Reported code forms P2177
SOME VEHICLES MAY EXHIBIT A LACK OF POWER WITH MIL ILLUMINATION AND DTCS P2187 / P2177 STORED IN MEMORY. •P2187: FUEL SYSTEM TOO LEAN AT IDLE•P2177: FUEL SYSTEM TOO LEAN AT OFF IDLETHIS CONCERN MAY BE CAUSED BY A/F…
MAZDA
Reported code forms P2177
ROUGH IDLE, LACK OF POWER, AND/OR MIL ON WITH DTC P2177/P2187 (FUEL SYSTEM LEAN). *NJ
MAZDA
Reported code forms P2177
ROUGH IDLE, LACK OF POWER, AND/OR MIL ON WITH DTC P2177/P2187 (FUEL SYSTEM LEAN). *NJ
Check vehicle applicability
3A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
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.