P1124 – Throttle Actuator Control Motor Relay Circuit Short

P1124 Possible Causes

  • Faulty throttle control motor relay
    Throttle control motor relay wiring harness is open or short-circuited
    Poor electrical connection in throttle control motor relay circuit

How to Fix Code P1124?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Check engine light illuminated (or service engine soon warning light)

P1124 Meaning

The throttle control motor’s electrical power is supplied to the engine control module (ECM) through the throttle control motor relay. The throttle control motor relay is ON/OFF controlled by the ECM. When the ignition switch is turned ON, the ECM sends an ON signal to the throttle control motor relay and battery voltage is supplied to the ECM. When the ignition switch is OFF, the ECM sends an OFF signal to the throttle control motor relay and battery voltage is not supplied to the ECM.

P1124 FORD F150 – Throttle Position Sensor Out of Self-Test Range

P1124 FORD F150 Possible Causes

  • Bent or damaged accelerator linkage or cable
  • Faulty throttle position sensor
  • Throttle position sensor wiring harness is open or shorted
  • Poor electrical connection in throttle position sensor circuit
  • Damaged PCM

How to Fix P1124 FORD F150 Code?

Start by checking the “possible causes” listed above. Visually inspect the wiring harness and related connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

What Does It Mean?

The Throttle Position (TP) sensor circuit is monitored by the Powertrain Control Module (PCM) for TP rotation angle or voltage input out of range. The test fails if the TP rotation angle or voltage reading is below 13.27% (0.66 volt) or above 23.52% (1.17 volt).

When Is the Code Detected?

The Engine Control Module (ECM) detected a throttle position (TP) sensor return voltage higher or lower than expected value during idle condition

Possible Symptoms

Illuminated check engine light (or service engine soon warning light)

P1124 FORD F150 Meaning

The Throttle Position Sensor (TPS) responds to accelerator pedal movement. The TPS is a rotary potentiometer sensor that provides a signal to the Powertrain Control Module (PCM) that is linearly proportional to throttle plate/shaft position. As the TPS is rotated by the throttle shaft, the following operating conditions are determined by the PCM:
• Closed throttle (includes idle or deceleration)
• Part throttle (includes cruise or moderate acceleration)
• Wide open throttle (includes maximum acceleration or crank flare)
• Throttle angle rate

P1124 NISSAN ALTIMA SEDAN – Throttle Control Motor Relay Short Circuit

Explanation of Code P1124 on 2002 Nissan Altima: “Throttle Control Motor Relay Stuck”

Severity

  • Level : 🔴 High (risk of loss of throttle control or engine stalling).
  • Urgency :
  • Throttle stuck in open/closed position → Immediate danger.
  • Limp mode activated (reduced power).

Common Symptoms

  • 🚨 Check engine light on (MIL).
  • 🛑 Unresponsive throttle or erratic response.
  • 🐌 Loss of power or unstable engine RPM.

Main Causes

  1. Faulty throttle control motor relay :
  • Stuck contacts (stuck ON/OFF) or faulty coil.
  1. Wiring issues :
  • Short circuit or open circuit in the relay harness.
  • Corrosion at the relay or ECM connector.
  1. ECM failure (rare) :
  • Relay control error (software or internal circuit).

Diagnostic Procedure (Detailed Steps)

Step 1: Relay Location

  • Where? : Relay box under the hood (refer to user manual).
  • Identification : Look for relay labeled “Throttle Control Motor Relay”.

Step 2: Relay Testing

  • Tools : Multimeter, 12V battery (to activate relay).
  • Procedure :
  1. Unplug relay and measure coil resistance (expected value: 50-120 Ω).
  2. Test contacts :
    • Without power : No continuity between terminals 30 and 87.
    • With 12V on coil : Continuity between 30 and 87.

Step 3: Electrical Circuit Inspection

  • Power supply : Check 12V at terminal 30 (red/yellow wire) with ignition ON.
  • ECM control : Measure voltage at terminal 85 (green/black wire) → Should be 0V with ignition OFF, 12V with ignition ON.

Step 4: ECM Connector Check

  • Location : ECM box (under dashboard on passenger side).
  • Action : Inspect pins C109-45 and C109-46 for corrosion or damage.

Solutions & Costs

Problem Solution Average Cost
Faulty relay Replacement (new relay) €20 – €50
Wiring repair Harness/connector repair €50 – €150
ECM connector cleaning Contact spray + dielectric grease €10 – €30
ECM reprogramming At Nissan dealership €100 – €300

Mistakes to Avoid

  • ❌ Forcing relay into socket : Risk of bending pins.
  • ❌ Ignoring related codes (e.g., P0120, P0220) : Also check pedal sensor.

Practical Case

  • Problem : Code P1124 on a 2002 Nissan Altima with stuck throttle.
  • Diagnosis : Relay stuck in ON position (constant power to throttle motor).
  • Solution : Relay replacement (€35) + ECM connector cleaning.

Pro Tips

  1. Test with identical relay : Swap with non-critical relay (e.g., headlights) for verification.
  2. Check throttle motor : Remove and test with direct 12V (should open/close smoothly).

If the problem persists, consult a professional equipped with Nissan Consult-II tools for in-depth analysis! 🔧🚗⚠️

P1124 INFINITI G35 – Throttle Actuator Control Motor Relay Circuit Short

P1124 INFINITI G35 Possible Causes

  • Faulty throttle control motor relay
  • Throttle control motor relay harness is open or shorted
  • Poor electrical connection in throttle control motor relay circuit

How to Fix P1124 INFINITI G35 Code?

Start by checking the “possible causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

When is the Code Detected?

– The ECM detects that the throttle control motor relay is stuck ON.

Possible Symptoms

Illuminated engine light (or service engine soon warning light)

P1124 INFINITI G35 Meaning

The throttle control motor power supply is provided to the engine control module (ECM) through the throttle control motor relay. The throttle control motor relay is ON/OFF controlled by the ECM. When the ignition switch is ON, the ECM sends an ON signal to the throttle control motor relay and battery voltage is supplied to the ECM. When the ignition switch is OFF, the ECM sends an OFF signal to the throttle control motor relay and battery voltage is not supplied to the ECM.

P1124 2006 FORD FUSION – Throttle Position Sensor Out of Self-Test Range

P1124 2006 FORD FUSION Possible Causes

  • Bent or damaged throttle linkage
  • Faulty throttle position sensor
  • Throttle position sensor wiring harness is open or shorted
  • Poor electrical connection in throttle position sensor circuit

How to Fix P1124 2006 FORD FUSION Code?

Start by checking the “possible causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

When is the Code Detected?

The Engine Control Module (ECM) detected that the throttle position (TP) sensor return voltage was higher or lower than expected during idle conditions

Symptoms

Possible symptoms

Illuminated check engine light (or service engine soon warning light)

P1124 2006 FORD FUSION Meaning

The throttle position sensor (TPS) responds to accelerator pedal movement. The TPS is a rotary potentiometer sensor that provides a signal to the powertrain control module (PCM) that is linearly proportional to throttle plate/shaft position. As the TPS is rotated by the throttle shaft, the following operating conditions are determined by the PCM:
• Closed throttle (includes idle or deceleration)
• Part throttle (includes cruise or moderate acceleration)
• Wide open throttle (includes maximum acceleration or crank flare)
• Throttle angle rate

P1124 AUDI – Long Term Fuel Trim Adjustment System, Bank 1 Too Lean

P1124 AUDI Possible Causes

  • Faulty HO2S
  • Faulty mass air flow sensor
  • High fuel pressure
  • Purge solenoid stuck open
  • HO2S harness is open or shorted
  • Poor electrical connection in HO2S circuit

How to Fix P1124 AUDI Code?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Engine light on (or engine service warning light soon)

P1124 AUDI Meaning

Long term fuel trim, bank 1 system too lean is the generic description for Audi P1124 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we don’t have more information about the Audi P1124 OBDII code.

P1124 BMW – Differential Pressure Sensor Intake Manifold Adaptation

P1124 BMW Possible Causes

  • Differential Pressure Sensor Adaptation
  • Differential Pressure Sensor Wiring Harness is Open or Short-Circuited
  • Poor Electrical Connection in the Differential Pressure Sensor Circuit

How to Fix BMW P1124 Code?

Start by checking the “Possible Causes” listed above. Visually inspect the corresponding wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Check Engine Light On (or Service Engine Soon Warning Light)

P1124 BMW Meaning

Intake Manifold Differential Pressure Sensor Adaptation is the generic description for BMW P1124 code, but the manufacturer may have a different description for your specific vehicle model and year. Currently, we don’t have additional information about the OBDII P1124 BMW code.

P1124 FORD – Throttle Position Sensor Out of Self-Test Range

P1124 FORD Possible Causes

  • Bent or damaged accelerator linkage or cable
  • Faulty throttle position sensor
  • Throttle position sensor wiring harness is open or shorted
  • Poor electrical connection in throttle position sensor circuit

How to Fix P1124 FORD Code?

Start by checking the “possible causes” listed above. Visually inspect the wiring harness and corresponding connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

What Does It Mean?

The throttle position (TP) sensor circuit is monitored by the Powertrain Control Module (PCM) for TP rotation angle or voltage input out of range. The test fails if the TP rotation angle or voltage reading is below 13.27% (0.66 volt) or above 23.52% (1.17 volt).

When Is the Code Detected?

The Engine Control Module (ECM) detected a throttle position (TP) sensor return voltage higher or lower than expected value during idle condition

Possible Symptoms

Check engine light illuminated (or service engine soon warning light)

P1124 FORD Meaning

The throttle position sensor (TPS) responds to accelerator pedal movement. The TPS is a rotary potentiometer sensor that provides a signal to the Powertrain Control Module (PCM) that is linearly proportional to throttle plate/shaft position. As the TPS is rotated by the throttle shaft, the following operating conditions are determined by the PCM:
• Closed throttle (includes idle or deceleration)
• Part throttle (includes cruise or moderate acceleration)
• Wide open throttle (includes maximum acceleration or crank flare)
• Throttle angle rate

P1124 HYUNDAI – Long Term Fuel Trim Lean Compensation System Error

P1124 HYUNDAI Possible Causes

  • Low fuel pressure
  • Clogged fuel filter
  • Faulty fuel pump
  • Engine mechanical condition
  • Large vacuum leak

How to Fix P1124 HYUNDAI Code?

Start by checking the “possible causes” listed above. Visually inspect the wiring harness and corresponding connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Engine light on (or engine service warning light soon)

P1124 HYUNDAI Meaning

Long Term Fuel Trim Lean Malfunction is the generic description for Hyundai P1124 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we don’t have further information about Hyundai OBDII P1124 code.

P1124 LINCOLN – Throttle Position Sensor Out of Self-Test Range

P1124 LINCOLN Possible Causes

  • Bent or damaged accelerator linkage or cable
  • Faulty throttle position sensor
  • Throttle position sensor wiring harness is open or shorted
  • Poor electrical connection in throttle position sensor circuit

How to Fix P1124 LINCOLN Code?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

What Does It Mean?

The throttle position (TP) sensor circuit is monitored by the powertrain control module (PCM) for TP rotation angle or voltage input out of range. The test fails if the TP rotation angle or voltage reading is below 13.27% (0.66 volt) or above 23.52% (1.17 volt).

When Is the Code Detected?

The engine control module (ECM) detected a throttle position (TP) sensor return voltage higher or lower than expected value during idle condition

Possible Symptoms

Illuminated check engine light (or service engine soon warning light)

P1124 LINCOLN Meaning

The throttle position sensor (TPS) responds to accelerator pedal movement. The TPS is a rotary potentiometer sensor that provides a signal to the powertrain control module (PCM) that is linearly proportional to throttle plate/shaft position. As the TPS is rotated by the throttle shaft, the following operating conditions are determined by the PCM:
• Closed throttle (includes idle or deceleration)
• Part throttle (includes cruise or moderate acceleration)
• Wide open throttle (includes maximum acceleration or crank flare)
• Throttle angle rate