P1464 1999 Ford F150 Code - Air Conditioning Demand Out Of Self Test Range
Quick Answer
The Diagnostic Trouble Code (DTC) P1464 can be set if A/C or defroster is on during Key On Engine Off (KOEO) or Key On Engine Running (KOER) self-test. Common causes include Faulty A/C Demand Switch, Faulty Wide Open Throttle A/C Cutoff (WAC) Relay, Wide Open Throttle A/C Cutoff Relay harness is open or shorted. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
- What it means
- P1464 1999 Ford F150 indicates Air Conditioning Demand Out Of Self Test Range.
- Common causes
- Common causes include Faulty A/C Demand Switch, Faulty Wide Open Throttle A/C Cutoff (WAC) Relay, Wide Open Throttle A/C Cutoff Relay harness is open or shorted.
- Severity
- Low - monitor the vehicle and repair when practical.
- Can I drive?
- The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
Code P1464 1999 Ford F150 Description
What are the Possible Causes of the DTC P1464 1999 Ford F150?
- Faulty A/C Demand Switch
- Faulty Wide Open Throttle A/C Cutoff (WAC) Relay
- Wide Open Throttle A/C Cutoff Relay harness is open or shorted
- Wide Open Throttle A/C Cutoff Relay circuit poor electrical connection
- Faulty Powertrain Control Module (PCM)
How to Fix the DTC P1464 1999 Ford F150?
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 P1464 1999 Ford F150 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 P1464 1999 Ford F150 Code
1. What does the OBDII code P1464 mean on a 1999 Ford F150?
P1464 indicates that the air conditioning demand signal is out of the expected range during the self-test, often caused by an electrical or sensor issue in the A/C system.
2. What are the common symptoms of P1464 in a 1999 Ford F150?
Symptoms may include the air conditioning not functioning properly, inconsistent cooling, or the A/C system failing to engage.
3. What causes the P1464 code to appear?
Common causes include a faulty A/C pressure switch, electrical wiring issues, a malfunctioning A/C relay, or problems with the HVAC control module.
4. How can I diagnose the P1464 code on my Ford F150?
Start by checking the A/C pressure switch, inspecting the wiring and connectors for damage, and using a multimeter to test voltage at the A/C relay and related circuits.
5. Can I still drive my 1999 Ford F150 with the P1464 code?
Yes, the truck is still drivable, but the A/C system may not function as intended, and ignoring the issue could lead to further damage to the A/C system.
6. What tools do I need to fix the P1464 code?
You may need an OBDII scanner, a multimeter to test electrical components, and basic tools to inspect and replace any faulty parts.
7. How do I fix the P1464 code on my Ford F150?
Repair steps may include replacing a defective A/C pressure switch, repairing damaged wiring or connectors, and ensuring the relay and HVAC control module are functioning correctly.
8. Is the P1464 code specific to the air conditioning system?
Yes, P1464 relates specifically to the air conditioning demand signal being out of range, which affects the A/C system operation.
9. Can low refrigerant levels trigger the P1464 code?
Low refrigerant levels are not a direct cause of P1464 but can contribute to A/C system issues that might lead to related faults.
10. Will clearing the P1464 code solve the problem?
Clearing the code might temporarily turn off the check engine light, but the underlying issue must be addressed to prevent the code from returning.
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