What Does P1692 Mean?
The metering oil pump stepping motor circuit has a malfunction, commonly found in rotary engines (Mazda RX-series). This system injects oil into the combustion chambers for apex seal lubrication. Circuit issues prevent proper motor control and oil delivery.
Common Causes
35%
Failed metering oil pump stepping motor
30%
Damaged wiring harness or connector to stepping motor
20%
PCM internal driver circuit failure
15%
Corroded or loose electrical connections
Diagnostic Steps
1
Step 1: Visually inspect metering oil pump motor connector and wiring for damage, corrosion, or loose connections
2
Step 2: Using a multimeter, check stepping motor resistance according to manufacturer specifications
3
Step 3: Test motor operation by commanding activation with scan tool (if capable) and listening/feeling for motor movement
4
Step 4: Check power and ground circuits at motor connector with key on, engine off
5
Step 5: If all circuits test good, suspect PCM driver circuit failure and consider PCM replacement or repair
Estimated Repair Cost
$200 - $800
Parts + labor, varies by vehicle and location
The metering oil pump stepping motor circuit has a malfunction, commonly found in rotary engines (Mazda RX-series). This system injects oil into the combustion chambers for apex seal lubrication. Circuit issues prevent proper motor control and oil delivery.
The most common cause of P1692 (Metering Oil Pump Stepping Motor Circuit Malfunction) is: Failed metering oil pump stepping motor
Typical repair costs for P1692 range from $200 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Continued operation without proper metering oil delivery will cause rapid apex seal wear and catastrophic engine failure. Should be repaired promptly to avoid expensive engine damage.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1692 to identify the root cause.
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Quick Info
Category
Powertrain
System
Engine Lubrication (Rotary)
Difficulty
Type
Manufacturer
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