Geo fault codes: probable meanings
Codes specific to Geo (often P1xxx, B1xxx, C1xxx, U1xxx). The manufacturer does not publish these meanings: they come from an open database and remain probable. The same code can have another meaning depending on the model or the year.
Codes: 19, from smallest to largest.
| Code | Probable meaning |
|---|---|
| P1250 | Early Fuel Evaporation Heater Circuit Fault |
| P1300 | Ignition Coil 1 Primary Feedback Circuit |
| P1305 | Ignition Coil 2 Primary Feedback Circuit |
| P1310 | Ignition Coil 3 Primary Feedback Circuit |
| P1315 | Ignition Coil 4 Primary Feedback Circuit |
| P1335 | Crankshaft Position Sensor Circuit |
| P1346 | Intake Camshaft Position System Performance |
| P1349 | Intake Camshaft Position System |
| P1408 | MAP Sensor Circuit |
| P1410 | Fuel Tank Pressure System Fault |
| P1450 | Barometric Pressure Sensor Circuit Fault |
| P1451 | Barometric Pressure Sensor Performance |
| P1460 | Cooling Fan Control System Fault |
| P1500 | Starter Signal Circuit Fault |
| P1510 | Backup Power Supply Fault |
| P1520 | Stop Lamp Switch Circuit |
| P1530 | Ignition Timing Adjustment Switch Circuit |
| P1600 | PCM Battery Circuit Fault |
| P1656 | Intake CMP Actuator Solenoid Control Circuit |
To understand a code on your car (probable causes, what to check first), the DiagAuto AI app explains it using AI. Discover the app
Official meanings: OBDex (public domain, CC0). Manufacturer codes: dtc-database (MIT license), probable meanings not verified by the manufacturers. The same meaning can vary depending on the model: always have a diagnosis confirmed by a professional.