P1221 CADILLAC – Throttle Position Sensor 1-2 Correlation

P1221 CADILLAC Possible Causes

  • Faulty throttle position sensor (TP)
  • Throttle position sensor (TP) harness is open or shorted
  • Poor electrical connection in the throttle position sensor (TP) circuit
 

How to Fix Code P1221 CADILLAC?

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

 
 

Possible Symptoms

  • Engine light on (or engine service warning light soon)
 

P1221 CADILLAC Meaning

The throttle position sensor (TP) is mounted on the throttle body of the throttle actuator control (TAC) assembly. The sensor is actually 2 individual throttle position sensors in 1 housing. Two separate signal circuits, one low reference circuit and one 5-volt reference circuit are used to connect the TP sensor assembly and the TAC module. The TP sensor signal voltage increases as the throttle opens. The TP sensor signal circuit is pulled up to a 5-volt reference voltage.

P1221 CHEVROLE T – Throttle Position Sensor 1-2 Correlation

P1221 CHEVROLET Possible Causes

  • Faulty Throttle Position Sensor (TP)
  • Throttle Position Sensor (TP) harness is open or shorted
  • Poor electrical connection in the Throttle Position Sensor (TP) circuit
 

How to Fix Code P1221 CHEVROLET?

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

 
 

Possible Symptoms

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

P1221 CHEVROLET Meaning

The Throttle Position Sensor (TP) is mounted on the throttle body of the Throttle Actuator Control (TAC) assembly. The sensor is actually 2 individual throttle position sensors in 1 housing. Two separate signal circuits, one low reference circuit and one 5-volt reference circuit are used to connect the TP sensor assembly and the TAC module. The TP sensor signal voltage increases as the throttle opens. The TP sensor signal circuit is pulled up to a 5-volt reference voltage.

P1221 GMC – Throttle Position Sensor 1-2 Correlation

P1221 GMC Possible Causes

  • Faulty throttle position sensor (TP)
  • Throttle position sensor (TP) harness is open or shorted
  • Poor electrical connection in the throttle position sensor (TP) circuit
 

How to Fix GMC Code P1221?

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

 
 
 

Possible Symptoms

  • Engine light on (or engine service warning light soon)
 

P1221 GMC Meaning

The throttle position sensor (TP) is mounted on the throttle body of the throttle actuator control (TAC) assembly. The sensor is actually 2 individual throttle position sensors in 1 housing. Two separate signal circuits, one low reference circuit and one 5-volt reference circuit are used to connect the TP sensor assembly and the TAC module. The TP sensor signal voltage increases as the throttle opens. The TP sensor signal circuit is pulled up to a 5-volt reference voltage.

P1221 ISUZU – Correlation Between Throttle Position Sensor 1 and 2

P1221 ISUZU Possible Causes

  • Faulty throttle position sensor (TP)
  • Throttle position sensor (TP) harness is open or shorted
  • Poor electrical connection in throttle position sensor (TP) circuit
 

How to Fix ISUZU Code P1221?

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

 
 

Possible Symptoms

  • Engine light on (or engine service warning light soon)
 

P1221 ISUZU Meaning

The throttle position sensor (TP) is mounted on the throttle body of the throttle actuator control (TAC) assembly. The sensor is actually 2 individual throttle position sensors in 1 housing. Two separate signal circuits, one low reference circuit and one 5-volt reference circuit are used to connect the TP sensor assembly and the TAC module. The TP sensor signal voltage increases as the throttle opens. The TP sensor signal circuit is pulled up to a 5-volt reference voltage.

P1221 VOLKSWAGEN – Cylinder Cut Off Exhaust Valve Ground Short Circuit

P1221 VOLKSWAGEN Possible Causes

  • Faulty shutdown relay
  • Shutdown relay wiring harness is open or short-circuited
  • Poor electrical connection in the shutdown relay circuit

How to Fix P1221 VOLKSWAGEN Code?

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

Possible Symptoms

  • Check engine light on (or service engine soon warning light)

P1221 VOLKSWAGEN Meaning

Cylinder shutdown exhaust valves short to ground is the generic description for Volkswagen P1221 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we have no further information about the Volkswagen P1221 OBDII code.

P1222 – Accelerator Motor Circuit

Code P1222: Meaning, Symptoms, Causes and Repairs

🚨 Meaning of Code P1222

Code P1222 is an OBD-II diagnostic code related to the electronic throttle system. It indicates a problem with the throttle actuator motor, controlled by the Engine Control Module (ECM).

The throttle controls the amount of air entering the engine, which directly affects performance and fuel consumption. If this code is stored, it means the throttle is stuck in the open position or the throttle actuator motor is not functioning correctly.

⚠️ Symptoms of Code P1222

🔴 Illuminated engine light (Check Engine or Service Engine Soon)
🔴 Abnormal throttle response (sluggish or irregular acceleration)
🔴 Unstable engine RPM (idle too high or too low)
🔴 Loss of power or limp mode (speed limitation)

🔍 Possible Causes of Code P1222

✅ Faulty throttle actuator motor
✅ Damaged throttle motor wiring harness (open or short circuit)
✅ Poor electrical connection in the throttle motor circuit
✅ Faulty throttle valve (sticking or wear)
✅ Worn or broken throttle drive gear

🔧 How to Repair Code P1222?

1️⃣ Visual Inspection of the Throttle System

🔹 Inspect the wiring harness of the throttle motor and look for damaged wires, loose connections, or short circuits.
🔹 Examine the electrical connectors and look for broken, bent, or corroded pins.
🔹 Check the throttle body for obstructions or excessive dirt (cleaning may sometimes be sufficient).

2️⃣ Testing the Throttle Actuator Motor

🔹 Use a multimeter to test the resistance of the throttle motor. Compare the values to the manufacturer’s specifications.
🔹 If the motor does not respond or displays abnormal values, it is likely faulty and needs to be replaced.

3️⃣ Checking Sensors and the ECM

🔹 Check the Throttle Position Sensor (TPS), which informs the ECM of the throttle’s position.
🔹 If everything seems functional mechanically and electrically, a problem with the ECM might be the cause. Advanced diagnosis with an OBD-II diagnostic tool is recommended.

4️⃣ Clearing the Code and Vehicle Testing

🔹 Once the repair is done, use an OBD-II scanner to clear the P1222 code.
🔹 Test drive the vehicle to see if the problem is resolved.

📌 Conclusion

Code P1222 is usually caused by a problem with the throttle motor, wiring harness, or throttle body. A thorough inspection and testing with a multimeter or OBD-II scanner are essential to diagnose and fix the problem quickly.

If the problem persists after repairs, a detailed check of the ECM module may be necessary. 🚗💨

P1222 AUDI – Exhaust Valve Cylinder Cutoff Short to B+

P1222 AUDI Possible Causes

  • Faulty shutoff relay
  • Shutoff relay wiring harness is open or short-circuited
  • Poor electrical connection in the shutoff relay circuit

How to Fix P1222 AUDI Code?

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

Possible Symptoms

  • Engine light on (or engine service soon warning light)

P1222 AUDI Meaning

Cylinder Cutoff Exhaust Valves abbreviated as B+ is the generic description for Audi P1222 code, but the manufacturer may have a different description for your specific vehicle model and year. Currently, we don’t have more information about the Audi P1222 OBDII code.

P1222 BUICK – Intermittent Injector 1 Control Circuit

P1222 BUICK Possible Causes

  • Faulty fuel injector 1
  • Fuel injector 1 harness is open or shorted
  • Poor electrical connection in fuel injector 1 circuit

How to Fix Code P1222 BUICK?

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

Possible Symptoms

  • Engine light on (or engine service soon warning light)

P1222 BUICK Meaning

With the engine running, the Powertrain Control Module (PCM) detects incorrect voltage potential on one of the fuel injector driver circuits for less than 500 ms. Additionally, code P0200 will be set if a fault in a component or circuit is detected.

P1222 CADILLAC – Intermittent injector 1 control circuit

P1222 CADILLAC Possible Causes

  • Faulty fuel injector 1
  • Fuel injector 1 harness is open or shorted
  • Poor electrical connection in fuel injector 1 circuit

How to Fix P1222 CADILLAC Code?

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

Possible Symptoms

  • Engine light on (or engine service soon warning light)

P1222 CADILLAC Meaning

With the engine running, the Powertrain Control Module (PCM) detects incorrect voltage potential on one of the fuel injector driver circuits for less than 500 ms. Additionally, code P0200 will be set if a fault in a component or circuit is detected.

P1222 CHEVROLET – Intermittent Injector 1 Control Circuit

P1222 CHEVROLET Possible Causes

  • Faulty fuel injector 1
  • Fuel injector 1 harness is open or shorted
  • Poor electrical connection in fuel injector 1 circuit

How to Fix Code P1222 CHEVROLET?

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

Possible Symptoms

  • Engine light on (or engine service soon warning light)

P1222 CHEVROLET Meaning

With the engine running, the Powertrain Control Module (PCM) detects incorrect voltage potential on one of the injector driver circuits for less than 500 ms. Additionally, code P0200 will be set if a fault in a component or circuit is detected.