PowertrainP0542
CautionSeverity: Caution - get it checked when you can
Intake Air Heater A Circuit High
Key terms: SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions
1What it means in plain English
This range covers vehicle speed, idle and oil-pressure control, charging-system voltage, and brake-switch circuits.
2Common causes
- Carbon build-up in the throttle body
- Faulty idle air control valve
- Faulty vehicle speed sensor
- Faulty charging system or weak battery
- Wiring or connector fault
3Can I drive?
Codes in this range include oil-pressure, brake-switch and charging-system voltage faults. If the oil-pressure warning light is on, stop the engine as soon as it is safe and do not drive until it is diagnosed. If the battery or charging warning light is on, drive straight to a workshop: the car can stall when the battery runs flat. For any other P05 code, have the car diagnosed promptly rather than continuing to drive.
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 23
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P0542 | Intake Air Heater A Circuit High SAE | Powertrain |
| BAIC Motor | P0542 | Intake Air Heater A Circuit High Brand | Powertrain |
| BMW | P0542 | Intake air Heater Circ.High Brand | Powertrain |
| BYD | P0542 | Intake Air Heater A Circuit High Brand | Powertrain |
| Chery | P0542 | Intake Air Heater A Circuit High Brand | Powertrain |
| Daewoo | P0542 | Intake Air Heater A Circuit High Brand | Powertrain |
| DFFS | P0542 | Intake Air Heater A Circuit High Brand | Powertrain |
| DFFX | P0542 | Intake Air Heater A Circuit High Brand | Powertrain |
| DFXK | P0542 | Intake Air Heater A Circuit High Brand | Powertrain |
| EOBD | P0542 | Inntaksluftvarmer 'A' krets høy Brand | Powertrain |
| Geely | P0542 | Intake Air Heater A Circuit High Brand | Powertrain |
| GM | P0542 | Intake Air Heater A Circuit High Brand | Powertrain |
| Great Wall | P0542 | Intake Air Heater A Circuit High Brand | Powertrain |
| Hafei | P0542 | Intake Air Heater A Circuit High Brand | Powertrain |
| Hyundai | P0542 | Intake Air Heater A Circuit High SAE | Powertrain |
| Isuzu | P0542 | Intake Air Heater A Circuit High SAE | Powertrain |
| Land Rover | P0542 | Intake air heater A - circuit high Brand | Powertrain |
| Peugeot | P0542 | Intake Air Heater A Circuit High SAE | Powertrain |
| Saab | P0542 | Intake Air Heater A Circuit High Brand | Powertrain |
| MG (SAIC) | P0542 | Intake Air Heater A Circuit High Brand | Powertrain |
| Tata | P0542 | Intake Air Heater 'A' Circuit High Brand | Powertrain |
| Toyota | P0542 | Intake Air Heater A Circuit High Brand | Powertrain |
| Volkswagen | P0542 | Intake air Pre-heater: short to plus; No or incorrect basic setting / adaptation 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 P0542 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | P054200 | End of Line alignment erroneous - signal quality insufficient Brand | Powertrain |
6Related codes
Browse Pxxx codes or P054xx codes.