PowertrainP2B21
CautionSeverity: Caution - get it checked when you can
Hybrid/EV Electronics Coolant Temperature Sensor 'B' Circuit Range/Performance
Key terms: Control module: a small computer that runs one part of the car · Powertrain: engine, transmission and emissions
1What it means in plain English
The engine or powertrain control system has stored a fault that does not have specific guidance in this database yet.
2Common causes
- Sensor or actuator fault
- Wiring or connector fault
- Vacuum or intake leak
- Fuel or ignition problem
- Control module fault
3Can I drive?
Watch the temperature gauge. Stop safely and let the engine cool if the gauge climbs, steam appears, or a red warning light comes on.
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 3
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P2B21 | No description available | Powertrain |
| EOBD | P2B21 | Sirkuit sensor suhu pendingin elektronik Hibrida/EV 'B' rentang/kinerja Brand | Powertrain |
| Land Rover | P2B21 | Hybrid/EV Electronics Coolant Temperature Sensor 'B' Circuit Range/Performance 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 2
These 7-character codes are manufacturer-specific variants of P2B21 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | P2B2100 | The coolant temperature sensor 2 of the power electronics has a malfunction. Brand | Powertrain |
| Mercedes-Benz | P2B212F | The coolant temperature sensor 2 of the power electronics has a malfunction. Signal erratic. Brand | Powertrain |
6Related codes
Browse Pxxx codes or P2B2xx codes.