Reference meaning
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.
Narrow by vehicle
A 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.
Scan worksheet →Manufacturer communications
3Original wording in English
MAZDA
SOME VEHICLES BUILT PRIOR TO JANUARY 2, 2001 MAY EXHIBIT ROUGH IDLE, ANTI-LOCK BRAKE SYSTEM (ABS) WARNING LAMP ILLUMINATION, INOPERATIVE OR ERRATIC SPEEDOMETER, DIAGNOSTIC TROUBLE CODE (DTC) P0500, P0501, P0503, P1721, P0176, P1000, ABS DTC 9, RABS DTC 16, OR A DELAYED OR HARSH SHIFTING AUTOMATIC TRANSMISSION. *TT
FORD
SOME VEHICLES MAY EXHIBIT A ROUGH IDLE, ANTI-LOCK BRAKE SYSTEM (ABS) WARNING LAMP ILLUMINATION, INOPERATIVE OR ERRATIC SPEEDOMETER, DIAGNOSTIC TROUBLE CODES (DTCS) P0500, P0501, P0503, P1721, P0176, P1000, ABS DTC 9, RABS DTC 16, OR A DELAYED OR HARSH SHIFTING AUTOMATIC TRANSMISSION. *TT
FORD
EXHBITING A ROUGH IDLE, ABS WARNING LAMP ILLUMINATION, INOPERATIVE OR ERRATIC SPEEDOMETER, DIAGNOSTIC TROUBLE CODES (DTC) P0500, P0501, P0503, P1721, P0176 OR P1000, ABS DTC C1230, RABS DTC 9 OR 16, OR A DELAYED OR HARSH SHIFTING AUTOMATIC TRANSMISSION. *TT
Check vehicle applicability
5A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Ford | FORD ↗ | Year unknown |
| Ford | RANGER ↗ | 2001 |
| Ford | RANGER ↗ | 2000 |
| Mazda | B-SERIES TRUCK ↗ | 2001 |
| Mazda | B-SERIES TRUCK ↗ | 2000 |
Code meaning and manufacturer information
Original wording in English · Historical directory labels; manufacturer applicability has not been established for every entry.
Gear 1 Incorrect Ratio
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.