P1192 — 13 documented meanings by make
Documented by: AUDI, BMW, CHRYSLER, CITROEN, FORD, JAGUAR, KIA, MAZDA, OPEL / VAUXHALL, PEUGEOT, SEAT, SKODA, SSANGYONG, SUZUKI, TOYOTA, VOLKSWAGEN — the meaning can differ between manufacturers
P1192 does not mean the same thing on every car — manufacturers reuse the number for different faults. 16 makes document it: Audi, BMW, Chrysler, Citroen, Ford, Jaguar, Kia, Mazda, Opel / Vauxhall, Peugeot, SEAT, Skoda, SsangYong, Suzuki, Toyota, Volkswagen. Find your make below.
| Make | Documented meaning | Points at |
|---|---|---|
| Audi | Fuel pressure sensor, G247, supply voltage | fuel supply |
| SEAT | Fuel pressure sensor, G247, supply voltage | fuel supply |
| Skoda | Fuel pressure sensor, G247, supply voltage | fuel supply |
| Volkswagen | Fuel pressure sensor, G247, supply voltage | fuel supply |
| BMW | Post-catalytic converter fuel trim system, bank 1 | catalytic converter |
| Chrysler | Inlet air temperature circuit low | signal too low |
| Citroen | Voltage external | |
| Ford | V external | |
| Ford | Heated oxygen sensor, open or short circuit – both downstream sensors | oxygen sensor · open circuit |
| Jaguar | Oxygen sensor heater, short circuit | oxygen sensor |
| Kia | Limp-home valve - abnormal target following | |
| Mazda | V external | |
| Opel / Vauxhall | Rail pressure, high pressure | signal too high |
| Peugeot | Variant Selection | |
| SsangYong | Fuel rail pressure sensor signal low | fuel supply · signal too low |
| Suzuki | Rail pressure higher than maximum | |
| Toyota | Hydraulic fuel cut-off by PCV and vacuum control valve |
P1192 on Audi, SEAT, Skoda, Volkswagen
On Audi, SEAT, Skoda, Volkswagen vehicles P1192 is documented as: Fuel pressure sensor, G247, supply voltage. P1192 points at fuel supply. The standard definition names the system involved; which part inside it has actually failed is what the checks below establish, cheapest first.
Usually one of: Fuel filter blocked; Pump worn and no longer making pressure; Pressure regulator faulty; Wiring or relay fault to the pump; Blocked strainer in the tank.
Check first, cheapest first:
- Measure actual fuel pressure against specification — this code is about pressure, so guessing without a gauge wastes parts
- Replace the fuel filter if it is due; it is the cheapest thing in the circuit
- Check the pump relay and its supply voltage
- Listen for the pump priming when the ignition is switched on
- Replace the pump once the filter, wiring and regulator are ruled out
Related Audi, SEAT, Skoda, Volkswagen codes:
P1192 on BMW
On BMW vehicles P1192 is documented as: Post-catalytic converter fuel trim system, bank 1. P1192 points at catalytic converter (bank 1). The standard definition names the system involved; which part inside it has actually failed is what the checks below establish, cheapest first.
Usually one of: Converter degraded with age or mileage; Engine running rich and destroying the substrate; Oil or coolant burning and poisoning the converter; Rear oxygen sensor reading inaccurately; Exhaust leak upstream drawing in air.
Check first, cheapest first:
- Fix any misfire or fuel-trim codes first — they destroy converters, and replacing one without fixing the cause destroys the new one too
- Check for exhaust leaks before and after the converter
- Compare front and rear oxygen sensor traces on live data
- Replace the rear sensor if it is the one reading wrongly — far cheaper than a converter
- Replace the converter once the engine side is proven healthy
Related BMW codes:
P1192 on Chrysler
On Chrysler vehicles P1192 is documented as: Inlet air temperature circuit low. P1192 is stored when the ECU sees signal too low on the circuit named in the code. That describes how the circuit is behaving, not which part has failed — the wiring, the connector and the component itself can all produce it, which is why the checks below start with the cheapest.
Usually one of: High resistance in the supply or ground path, dragging the signal down; Corroded connector adding resistance the module reads as a low reading; Sensor drifted out of tolerance with age; Partial short to ground somewhere in the signal line.
Check first, cheapest first:
- Read the live value on a scanner and compare with a known-good reading
- Clean and re-seat the connector, then re-test before replacing anything
- Check the ground point for that circuit — a poor ground causes this far more often than a bad sensor
- Measure the sensor against specification with the connector back-probed
- Replace the sensor only once the wiring and ground have been ruled out
Related Chrysler codes:
P1192 on Jaguar
On Jaguar vehicles P1192 is documented as: Oxygen sensor heater, short circuit. P1192 points at oxygen sensor. The standard definition names the system involved; which part inside it has actually failed is what the checks below establish, cheapest first.
Usually one of: Sensor aged and slow to respond; Heater element failed inside the sensor; Wiring or connector fault at the sensor; Exhaust leak near the sensor drawing in air; Engine genuinely running rich or lean.
Check first, cheapest first:
- Read the sensor's live trace — a lazy or flat signal identifies an aged sensor without removing anything
- Check for exhaust leaks upstream of the sensor
- Inspect the connector, which sits in a hot and exposed place and corrodes
- Measure the heater resistance against specification
- Replace the sensor once the exhaust and wiring are ruled out
Related Jaguar codes:
P1192 on Opel / Vauxhall
On Opel / Vauxhall vehicles P1192 is documented as: Rail pressure, high pressure. P1192 is stored when the ECU sees signal too high on the circuit named in the code. That describes how the circuit is behaving, not which part has failed — the wiring, the connector and the component itself can all produce it, which is why the checks below start with the cheapest.
Usually one of: Open ground for the sensor, letting the signal float up; Signal line shorted to a supply voltage; Sensor failed open, which the module reads as maximum; Connector fault interrupting the return path.
Check first, cheapest first:
- Read the live value and compare with what the conditions should produce
- Check the sensor ground continuity back to the module
- Unplug the sensor: if the reading changes, the wiring is intact and the sensor is suspect
- Inspect the connector for corrosion or a spread terminal
- Replace the sensor once ground and signal wiring are confirmed good
Related Opel / Vauxhall codes:
P1192 on SsangYong
On SsangYong vehicles P1192 is documented as: Fuel rail pressure sensor signal low. P1192 is stored when the ECU sees signal too low on fuel supply. That describes how the circuit is behaving, not which part has failed — the wiring, the connector and the component itself can all produce it, which is why the checks below start with the cheapest.
Usually one of: High resistance in the supply or ground path, dragging the signal down; Corroded connector adding resistance the module reads as a low reading; Sensor drifted out of tolerance with age; Partial short to ground somewhere in the signal line.
Check first, cheapest first:
- Read the live value on a scanner and compare with a known-good reading
- Clean and re-seat the connector, then re-test before replacing anything
- Check the ground point for that circuit — a poor ground causes this far more often than a bad sensor
- Measure the sensor against specification with the connector back-probed
- Replace the sensor only once the wiring and ground have been ruled out
Related SsangYong codes:
Which one is yours
A generic OBD reader gives you the number, not which of these meanings your manufacturer assigned to it. To get to the specific one:
- Use a brand-specific scanner — VCDS for VAG, INPA or ISTA for BMW, XENTRY for Mercedes, Forscan for Ford. It shows the manufacturer's own text rather than the generic one.
- Read all stored codes together — the neighbouring ones usually point at which system is involved and narrow the list.
- Check freeze-frame data: the RPM, temperature and load at the moment it triggered indicate which system was active.
- If you have no brand scanner, tell me the make and model below and I will tell you which of these applies to your car.
Code family
P1xxx is manufacturer-specific code (VW/Audi, BMW, Mercedes, Toyota etc. have different meanings for the same code number).
Severity
Manufacturer-specific codes need a brand scanner (VCDS for VAG, INPA for BMW, STAR for Mercedes).
That is what holds for P1192 in general. From here it depends on your engine — tell me which car it is and what it does, and I will give you the steps for it: real procedures, torque figures and diagrams instead of general advice.
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Code breakdown
Who makes these pages, and how
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