Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMAZDA1999PROTEGE ES, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - SELF-DIAGNOSTICS - 1.8LDIAGNOSTIC TESTSDTC P1250: PRESSURE REGULATOR CONTROL (PRC) SOLENOID VALVE MALFUNCTIONCONDITION
1999 Mazda Protege ES, Automatic
DTC P1250: Pressure Regulator Control (PRC) Solenoid Valve Malfunction: Condition
1999 Mazda Protege ES, AutomaticSECTION Condition
DTC is set when open or short circuit is detected in PRC solenoid valve when ignition is on. Possible causes are:
- PRC solenoid valve malfunction.
- Poor connection of PCM and PRC connectors.
- Open or short circuit between terminal "B" on PRC solenoid valve and terminal No. 95 on Powertrain Control Module (PCM).
- Open circuit between terminal "A" on PRC solenoid valve and terminal "D" on main relay.
- Open circuit between ground and terminal No. 24 (Black/White wire), No. 51 (Black/White wire), No. 76 (Black/White wire), No. 77 (Black/White wire) and No. 103 (Black/Red wire) on PCM.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.