P1663 Ford Code - Fuel Demand Command Signal Circuit Malfunction
Quick Answer
The P1663 code indicates that the Powertrain Control Module (PCM) has detected a failure on the Fuel Delivery Command Signal (FDCS) line. Common causes include Fuel Demand Command Signal open circuit, Faulty Injector Driver Module (IDM), Injector Driver Module (IDM) harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1663 Ford indicates Fuel Demand Command Signal Circuit Malfunction.
- Common causes
- Common causes include Fuel Demand Command Signal open circuit, Faulty Injector Driver Module (IDM), Injector Driver Module (IDM) harness is open or shorted.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1663 Ford Description
What are the Possible Causes of the DTC P1663 Ford?
- Fuel Demand Command Signal open circuit
- Faulty Injector Driver Module (IDM)
- Injector Driver Module (IDM) harness is open or shorted
- Injector Driver Module (IDM) circuit poor electrical connection
How to Fix the DTC P1663 Ford?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1663 Ford code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P1663 Ford Code
What does the OBDII code P1663 mean on a Ford vehicle?
The P1663 code indicates a Fuel Demand Command Signal Circuit Malfunction, which means there is an issue in the communication between the Powertrain Control Module (PCM) and the fuel pump control module.
What are the common symptoms of the P1663 code?
Symptoms may include poor engine performance, difficulty starting the vehicle, reduced power, or the engine stalling.
What causes the P1663 code to appear?
Common causes include faulty wiring or connectors in the fuel demand signal circuit, a malfunctioning fuel pump control module, or a failing PCM.
Can a P1663 code cause drivability issues?
Yes, it can lead to drivability problems such as hesitation, loss of power, or the engine not running at optimal performance.
How can you diagnose the P1663 code?
Diagnosis typically involves checking the wiring and connectors in the fuel demand signal circuit, testing the fuel pump control module, and ensuring the PCM is functioning properly.
Is it safe to drive with a P1663 code?
Driving with this code is not recommended, as it can lead to poor performance or engine stalling, potentially creating unsafe driving conditions.
What tools are needed to diagnose and fix a P1663 code?
You’ll need an OBDII scanner, a multimeter to test the circuit, and potentially a wiring diagram for the vehicle's fuel demand command system.
How do you fix the P1663 code?
Repairs may involve repairing or replacing damaged wiring, cleaning or securing electrical connectors, replacing the fuel pump control module, or reprogramming the PCM if necessary.
Can a weak fuel pump cause the P1663 code?
While a weak fuel pump is not a direct cause of this code, issues in the communication circuit between the PCM and the fuel pump control module can trigger it.
Will clearing the P1663 code with a scanner solve the problem?
Clearing the code will turn off the check engine light temporarily, but the issue will likely return unless the underlying problem is fixed.
Discuss the causes and fixes for P1663 Ford OBDII Code
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no start,replaced crankshaft position sensor. also has P1669 code.
need help pleaase
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