PowertrainP0198
SeriousSeverity: Serious - have it checked soon
Engine Oil Temperature Sensor A Circuit High
Key terms: Oxygen sensor: measures oxygen in the exhaust gas · Mass air flow sensor: measures the air going into the engine · SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions
1What it means in plain English
This code is in the fuel, air and oxygen sensor range, which also includes coolant temperature faults.
2Common causes
- Dirty or faulty mass air flow sensor
- Vacuum or intake air leak
- Weak fuel pump or clogged fuel filter
- Faulty fuel injector
- Faulty oxygen sensor
- Wiring or connector fault
3Can I drive?
Stop the engine as soon as it is safe and do not drive until it has been checked. Low oil pressure or a low oil level can destroy the engine within minutes.
This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.
4Brand data 37
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P0198 | Fuel Injection Sync Circuit. Engine Cold Start. Cylinder 11 Brand | Powertrain |
| BAIC Motor | P0198 | Engine Oil Temperature Sensor High Brand | Powertrain |
| Mercedes-Benz | P0198 | Engine Oil Temperature Sensor A Circuit High SAE | Powertrain |
| BMW | P0198 | Short circuit to positive or open circuit Brand | Powertrain |
| BYD | P0198 | Engine Oil Temperature Sensor High Brand | Powertrain |
| Chery | P0198 | Engine Oil Temperature Sensor High Brand | Powertrain |
| Daewoo | P0198 | Engine Oil Temperature Sensor High Brand | Powertrain |
| DFFS | P0198 | Engine Oil Temperature Sensor High Brand | Powertrain |
| DFFX | P0198 | Engine Oil Temperature Sensor High Brand | Powertrain |
| DFXK | P0198 | Engine Oil Temperature Sensor High Brand | Powertrain |
| EOBD | P0198 | Motoroljetemperaturgivare 'A' krets hög Brand | Powertrain |
| Geely | P0198 | Engine Oil Temperature Sensor High Brand | Powertrain |
| GM | P0198 | Engine Oil Temperature Sensor High Brand | Powertrain |
| Great Wall | P0198 | Oil temperature signal high Brand | Powertrain |
| Hafei | P0198 | Engine Oil Temperature Sensor High Brand | Powertrain |
| Holden | P0198 | Engine Oil Temperature Sensor Circuit High Voltage Brand | Powertrain |
| Honda | P0198 | Engine Oil Temperature Sensor A Circuit High SAE | Powertrain |
| Hyundai | P0198 | Engine Oil Temperature Sensor A Circuit High SAE | Powertrain |
| Isuzu | P0198 | Engine Oil Temperature Sensor A Circuit High SAE | Powertrain |
| Land Rover | P0198 | Engine Oil Temperature Sensor A Circuit High SAE | Powertrain |
| Mahindra | P0198 | Engine Oil Temperature Sensor A Circuit High SAE | Powertrain |
| Maserati | P0198 | Engine oil temperature sensor circuit high Brand | Powertrain |
| Mitsubishi | P0198 | Oil temperature sensor high Brand | Powertrain |
| Nissan | P0198 | Engine Oil Temperature Sensor A Circuit High SAE | Powertrain |
| Opel | P0198 | Engine Oil Temperature Sensor High Brand | Powertrain |
| Peugeot | P0198 | Engine Oil Temperature Sensor A Circuit High SAE | Powertrain |
| Porsche | P0198 | Engine Oil Temperature Sensor A Circuit High SAE | Powertrain |
| Proton | P0198 | Oil temperature sensor high Brand | Powertrain |
| Renault | P0198 | Engine Oil Temperature Sensor A Circuit High SAE | Powertrain |
| Saab | P0198 | Engine Oil Temperature Sensor High Brand | Powertrain |
| MG (SAIC) | P0198 | Toil Sensor Circuit Low Brand | Powertrain |
| Sprinter | P0198 | Engine Oil Temperature Sensor A Circuit High SAE | Powertrain |
| Subaru | P0198 | Oil Temp. Sensor Circuit Malfunction Brand | Powertrain |
| Suzuki | P0198 | Engine Oil Temperature Sensor Circuit High Brand | Powertrain |
| Tata | P0198 | Engine Oil Temperature Sensor High Brand | Powertrain |
| Toyota | P0198 | Engine Oil Temperature Sensor High Brand | Powertrain |
| Volkswagen | P0198 | Engine oil temp. sensor (G8): signal too high; Short to ground Brand | Powertrain |
Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.
5Extended variant codes 1
These 7-character codes are manufacturer-specific variants of P0198 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Hyundai | P019800 | Short to Battery or Open in Engine Oil Temperature Sensor signal circuit is detected, ECM/PCM sets DTC Brand | Powertrain |
6Related codes
Browse Pxxx codes or P019xx codes.