What Does P1654 Mean?
The fuel pump control circuit has detected a malfunction in the resistor switch that regulates fuel pump speed. This component controls fuel pump operation at different speeds based on engine load and operating conditions.
Common Causes
35%
Faulty fuel pump resistor or resistor module
30%
Damaged wiring or corroded connectors in fuel pump control circuit
20%
Failed fuel pump relay or control relay
15%
ECM/PCM internal fault in fuel pump control driver
Diagnostic Steps
1
Step 1: Inspect fuel pump resistor module and connectors for physical damage, corrosion, or overheating
2
Step 2: Test fuel pump resistor with multimeter for proper resistance values per manufacturer specifications
3
Step 3: Check voltage supply and ground circuits at resistor module with KOEO and engine running
4
Step 4: Test fuel pump relay operation and inspect relay contacts for burning or pitting
5
Step 5: Monitor fuel pump control signal from ECM with scan tool or oscilloscope during various load conditions
Estimated Repair Cost
$150 - $600
Parts + labor, varies by vehicle and location
The fuel pump control circuit has detected a malfunction in the resistor switch that regulates fuel pump speed. This component controls fuel pump operation at different speeds based on engine load and operating conditions.
The most common cause of P1654 (Fuel Pump Resistor Switch Circuit Malfunction) is: Faulty fuel pump resistor or resistor module
Typical repair costs for P1654 range from $150 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle may experience reduced fuel pump performance, potential stalling, or difficulty starting. May leave driver stranded if fuel pump fails completely.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1654 to identify the root cause.
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Quick Info
Category
Powertrain
System
Fuel System
Difficulty
Type
Manufacturer
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