Mahindra DI-3200-CRX - Rail Pressure Sensor Diagnostics; Rail Pressure Sensor Range & Drop Issues (P0192-P1190)

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Diagnostic Manual ( EMS) LCV MDI BSIII CRDe

Rev 01- Mar 14

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The repair methods given by the manufacturer in this document are based on the technical specifications current at the time of release.

The methods may be modified as a result of changes introduced by the manufacturer in the production of the various component units

and accessories from which the vehicles are manufactured. The reproduction, translation, transmission, in part of whole of the present

document, are prohibited without the prior written consent of 2014 Mahindra & Mahindra Ltd (Truck & Bus Division)

Rail Pressure Sensor

DTC

Diagnostic item

P0192

P0193

P1190

P0194

P1191

P1192

P1193

P0087

P0088

P1253

P1254

P1256

P1257

P1258

P1259

Signal range check for rail pressure sensor below minimum limit

Signal range check for rail pressure sensor above maximum limit.

Analogue to Digital Convertor fault.

Rail Pressure sensor - pressure drop

Rail pressure signal-sensor drift.

Rail pressure signal falls below the calibrated min value

(Ignition ON)

Rail pressure signal exceeds the calibrated min value (Ignition ON)

Rail pressure does not build within the speculated time.

Rail pressure exceeds the Calibrated pressure limit in absence

of fault in pressure measurement.

Rail pressure control error (pressure error too high) – Negative

Rail pressure control error (pressure error too high) – Positive

Rail pressure control error (IMV current trim drift) - Low

fuel low fault

Rail pressure control error (IMV current trim drift) - Low

fuel high fault

Rail pressure control error (IMV current trim drift) - High

fuel low fault

Rail pressure control error (IMV current trim drift) - High

fuel high fault

DTC detection condition Probable cause

• When ignition is ON rail pressure sensor

getting supply from ECU.

• ECU reads the rail pressure in terms of

voltage.

• Engine is starting properly.

• Building pressure in rail.

Malfunction; out-of-range

• Rail pressure output voltage is below 4.7 V or

if the ground is not connected..

Reaction:

• Engine is switched off.

• Rail pressure value is frozen to the last known

good value

• Open, shorted or

wrong connection

of rail pressure

sensor circuit.

• Rail pressure

sensor failed.