What Does P1694 Mean?
The oil pressure control solenoid circuit has an electrical malfunction. This solenoid regulates variable valve timing oil pressure or variable displacement oil pump pressure depending on application. Circuit fault prevents proper oil pressure modulation.
Common Causes
35%
Failed oil pressure control solenoid valve
30%
Damaged wiring or connector to solenoid
20%
Shorted or open solenoid coil
15%
PCM solenoid driver circuit failure
Diagnostic Steps
1
Step 1: Locate and inspect oil pressure control solenoid connector for oil contamination, corrosion, or damage
2
Step 2: Measure solenoid coil resistance with multimeter and compare to specifications (typically 6-30 ohms)
3
Step 3: Check for power supply and ground at solenoid connector with key on
4
Step 4: Perform actuator test using scan tool to command solenoid on/off while monitoring current draw
5
Step 5: If solenoid tests good, check PCM connector and suspect internal PCM driver failure
Estimated Repair Cost
$150 - $600
Parts + labor, varies by vehicle and location
The oil pressure control solenoid circuit has an electrical malfunction. This solenoid regulates variable valve timing oil pressure or variable displacement oil pump pressure depending on application. Circuit fault prevents proper oil pressure modulation.
The most common cause of P1694 (Oil Pressure Control Solenoid Circuit Malfunction) is: Failed oil pressure control solenoid valve
Typical repair costs for P1694 range from $150 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
May cause poor engine performance, timing issues, or reduced fuel economy. Generally safe to drive short distances but should be repaired soon to prevent potential oil pressure-related engine damage.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1694 to identify the root cause.
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Quick Info
Category
Powertrain
System
Engine Oil Pressure Control / VVT
Difficulty
Type
Manufacturer
Recommended Tools
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