P1122 Acura Code - Throttle Position Sensor Signal Higher Than Expected
Quick Answer
The P1122 code for Acura vehicles indicates that the throttle position sensor signal is higher than expected. Common causes include Faulty throttle position sensor: The most common cause of the P1122 code is a malfunctioning throttle position sensor, Over time, the TPS can wear out or become contaminated with dirt, causing it to send incorrect signals to the ECM, Wiring issues: Damage or corrosion in the wiring harness that connects the TPS to the ECM can also lead to a higher than expected signal. 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
- P1122 Acura indicates Throttle Position Sensor Signal Higher Than Expected.
- Common causes
- Common causes include Faulty throttle position sensor: The most common cause of the P1122 code is a malfunctioning throttle position sensor, Over time, the TPS can wear out or become contaminated with dirt, causing it to send incorrect signals to the ECM, Wiring issues: Damage or corrosion in the wiring harness that connects the TPS to the ECM can also lead to a higher than expected signal.
- 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.
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Code P1122 Acura Description
The P1122 code for Acura vehicles indicates that the throttle position sensor signal is higher than expected. The throttle position sensor (TPS) is a crucial component of the engine management system, as it monitors the position of the throttle plate in the throttle body and sends this information to the engine control module (ECM). The ECM uses this data to determine the appropriate air-fuel mixture for combustion, as well as other critical parameters for engine performance.
Common Causes of P1122 Acura
- Faulty throttle position sensor: The most common cause of the P1122 code is a malfunctioning throttle position sensor. Over time, the TPS can wear out or become contaminated with dirt, causing it to send incorrect signals to the ECM.
- Wiring issues: Damage or corrosion in the wiring harness that connects the TPS to the ECM can also lead to a higher than expected signal. This can result from exposure to moisture, heat, or physical damage.
- ECM failure: In some cases, a faulty ECM can misinterpret the signals from the TPS, leading to the P1122 code. This is less common but should be considered as a potential cause.
- Throttle body issues: Problems with the throttle body itself, such as carbon buildup or a sticking throttle plate, can also affect the TPS signal and trigger this code.
- Environmental factors: Extreme temperatures, humidity, or other environmental conditions can sometimes affect the TPS and cause it to send incorrect signals.
Symptoms of P1122 Acura
- Poor acceleration: The vehicle may have difficulty accelerating smoothly or quickly.
- Rough idling: The engine may idle erratically or shake while at a standstill.
- Stalling: The engine may stall unexpectedly, especially when coming to a stop or at low speeds.
- Hesitation: The vehicle may hesitate or jerk during acceleration, indicating a problem with the throttle response.
- Decreased fuel efficiency: The vehicle may consume more fuel than usual due to incorrect air-fuel mixtures.
How to Fix P1122 Acura
- Diagnose the issue: Use a scan tool to read the code and perform a thorough inspection of the throttle position sensor, wiring, and related components to identify the root cause of the problem.
- Replace the throttle position sensor: If the sensor is faulty, replace it with a new one that is compatible with your Acura vehicle model.
- Repair or replace damaged wiring: Address any wiring issues by repairing or replacing damaged wires or connectors in the TPS circuit.
- Clean the throttle body: Remove any debris or buildup from the throttle body and throttle plate to ensure proper operation and prevent future issues.
- Clear the code: After completing the repairs, clear the P1122 code from the ECM memory using a scan tool to reset the system and verify that the issue has been resolved.
Cost to Fix P1122 Acura
The cost of repairing the P1122 code on an Acura vehicle can vary depending on the specific model, year, and location of the vehicle. In general, the cost of replacing a throttle position sensor ranges from $50 to $200, depending on the quality and brand of the sensor. Labor costs for this repair can range from $80 to $150 per hour, with the total repair time typically taking around 1-2 hours. Therefore, the total cost for addressing the P1122 code can range from $130 to $500, including parts and labor. It is advisable to consult with a trusted mechanic or auto repair shop to obtain a more accurate estimate based on your vehicle's specific needs.
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