Ford P1124 Error Code: How to Fix It

Medium 45-90 minutes High Severity Verified June 2026
Error Code
P1124
Brand
Ford
Product Type
automotive
Severity
High
DIY Difficulty
Medium
Estimated Fix Time
45-90 minutes
Ford error code P1124 indicates that the Throttle Position Sensor (TPS) is reading outside its expected range during the self-test procedure, specifically showing values that are too high. This can cause poor engine performance, rough idling, and potential stalling issues.
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Tools You'll Need

How to Fix Error Code P1124

  1. Turn off engine and ensure safety

    Always disconnect the battery before working on electrical components to prevent shock or damage to the vehicle's computer systems.
  2. Locate the throttle position sensor

  3. Inspect TPS electrical connections

  4. Test TPS voltage with multimeter

    Be careful not to short circuit any wires while back-probing the connector.
  5. Check TPS resistance

  6. Inspect throttle body for carbon buildup

    Use only throttle body cleaner, not carburetor cleaner, as it can damage sensors and coatings.
  7. Replace TPS if defective

  8. Clear codes and test drive

Parts You May Need

Throttle Position Sensor
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Electrical contact cleaner
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Throttle body cleaner
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Throttle Position Sensor
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Electrical contact cleaner
Check Price on Amazon
Throttle body cleaner
Check Price on Amazon
Throttle Position Sensor
Check Price on Amazon
Electrical contact cleaner
Check Price on Amazon
Throttle body cleaner
Check Price on Amazon
Throttle Position Sensor
Check Price on Amazon
Electrical contact cleaner
Check Price on Amazon
Throttle body cleaner
Check Price on Amazon
Throttle Position Sensor
Check Price on Amazon
Electrical contact cleaner
Check Price on Amazon
Throttle body cleaner
Check Price on Amazon
Throttle Position Sensor
Check Price on Amazon
Electrical contact cleaner
Check Price on Amazon
Throttle body cleaner
Check Price on Amazon
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When to Call a Professional

If the TPS tests good but the code persists, there may be wiring issues between the sensor and PCM, or internal PCM problems that require professional diagnosis with advanced scan tools.

Frequently Asked Questions

Can I drive with Ford error code P1124?
You should avoid driving with P1124 as it can cause unpredictable engine behavior, poor acceleration, and potential stalling. Have it diagnosed and repaired as soon as possible.
What causes Ford P1124 error code?
P1124 is typically caused by a faulty throttle position sensor, corroded electrical connections, damaged wiring, or carbon buildup affecting throttle operation.
How much does it cost to fix P1124?
If it's just a TPS replacement, expect $50-150 for the part plus labor. If wiring repairs are needed, costs can range from $200-500 depending on the extent of the damage.
Will P1124 cause my Ford to fail emissions testing?
Yes, P1124 will likely cause your vehicle to fail emissions testing as it affects engine performance and the OBD2 system readiness monitors.