P0220
Stop drivingThe engine computer detects a problem with the 'B' circuit of the throttle position sensor (TPS) or accelerator pedal position (APP) sensor, which tells the computer how much you're pressing the gas pedal.
Code P0220 means the engine computer detects a problem with the throttle/pedal position sensor 'B' circuit. Common causes: APP sensor (40%), TPS (30%), wiring (20%). Drivability: No, stop driving immediately. Repair cost: $100-$300 DIY, $250-$700 professional.
Can I Drive With P0220?
No, stop driving
Immediate repair needed
Stop driving immediately if: Any symptoms of reduced power, erratic idle, or inconsistent throttle response.
Symptoms of P0220
- 1Check Engine Light is on
- 2Reduced engine power or 'limp mode'
- 3Engine stalls or idles erratically
- 4Vehicle hesitates or surges when accelerating
- 5Throttle response is inconsistent or non-existent
Common Causes of P0220
Parts most likely causing this code, ranked by probability
The sensor that reads your pedal input is sending an incorrect or no signal to the engine computer.
40% of P0220 cases are fixed by replacing this part
The sensor on the throttle body that monitors its opening angle is faulty, sending bad data to the engine computer.
30% of P0220 cases are fixed by replacing this part
Damaged, corroded, or loose wiring and connectors to the APP or TPS sensor disrupt the signal.
20% of P0220 cases are fixed by repairing wiring
If the TPS is integrated into the throttle body, a mechanical or electrical fault within the assembly can trigger the code.
8% of P0220 cases are fixed by replacing this part
A rare internal fault in the engine computer can incorrectly interpret sensor signals or fail to process them.
2% of P0220 cases are fixed by replacing this part
Check These First (Before Buying Parts)
- Visually inspect the wiring harness and connectors for the APP sensor (located near the gas pedal) and the TPS (on the throttle body) for any obvious damage, fraying, or corrosion.
- Ensure the throttle body plate moves freely and is not sticking or obstructed by carbon buildup.
How to Diagnose P0220
- 1Visually inspect the wiring and connectors for the APP sensor (near the gas pedal) and the TPS (on the throttle body) for damage, corrosion, or looseness.
- 2Use an OBD-II scan tool to monitor live data from the APP and TPS sensors while pressing the pedal slowly and observing the throttle plate movement.
- 3Perform a voltage check on the APP and TPS sensor circuits using a multimeter to verify proper power, ground, and signal voltages.
- 4If the sensor readings are erratic or absent, disconnect the sensor and test its resistance or voltage output directly.
- 5If all sensor and wiring checks pass, consider testing the throttle body motor for proper operation or, as a last resort, suspect the PCM.
P0220 on Popular Vehicles
Toyota Camry
2007-2011Some Toyota Camry models from these years have documented issues with the Accelerator Pedal Position (APP) sensor, which can trigger P0220. The sensor can wear out, leading to erratic signals.
60% fixed by APP sensor replacement
Honda Accord
2003-2007Honda Accords in this generation can experience P0220 due to a failing Throttle Position Sensor (TPS), which is often integrated into the throttle body. Wiring harness corrosion at the throttle body connector is also a known issue.
55% fixed by TPS/throttle body replacement
Ford F-150
2004-2014Ford F-150 trucks, particularly with the 5.4L engine, are prone to P0220 due to electronic throttle body failures. The internal gears or the integrated TPS can fail, requiring replacement of the entire throttle body assembly.
70% fixed by throttle body replacement
Frequently Asked Questions
What does P0220 mean?
P0220 indicates the engine's computer has detected an electrical malfunction in the 'B' circuit of either the accelerator pedal position (APP) sensor or the throttle position sensor (TPS). This circuit is crucial for telling the engine how much power you're requesting.
Can I drive with P0220?
No, stop driving immediately. This code directly impacts your vehicle's ability to accelerate and maintain speed, creating a significant safety hazard. Driving with this code can lead to sudden power loss, stalling, or uncontrolled acceleration.
Will P0220 clear itself?
No, P0220 will not clear itself. This code points to a hard fault in a critical sensor circuit. The engine computer will keep the Check Engine Light on until the underlying issue is diagnosed and repaired.
How do I fix P0220 myself?
Start by visually inspecting the wiring and connectors for the APP sensor (near the pedal) and the TPS (on the throttle body). If they look good, you'll need a multimeter to test the voltage signals from these sensors. If a sensor is faulty, replacing the APP sensor or TPS (or the entire throttle body if the TPS is integrated) is the next step.
How much does it cost to fix P0220?
DIY repair costs for P0220 typically range from $100-$300 for a new APP sensor, TPS, or a used throttle body. Professional repair costs usually fall between $250-$700, covering parts and labor.
P0220 keeps coming back - why?
P0220 keeps coming back because the root cause was not fully addressed. Common reasons include: a faulty replacement sensor, a hidden wiring issue that wasn't found, a problem with the throttle body itself (if only the TPS was replaced), or, in rare cases, a failing engine computer.
Will P0220 fail emissions/smog test?
Yes, P0220 will cause your vehicle to fail an emissions or smog test. The Check Engine Light being on automatically results in a failure, and this code indicates a critical engine control system malfunction.
What's the difference between P0220 and P0120?
P0220 indicates a general circuit malfunction for the 'B' circuit of the throttle/pedal position sensor. P0120 indicates a general circuit malfunction for the 'A' circuit of the throttle/pedal position sensor. Modern vehicles use multiple circuits for redundancy and safety, so these codes point to issues in different parts of the same sensor system.
P0220 on Ford F-150
On Ford F-150s, P0220 is frequently linked to issues with the electronic throttle body assembly. The integrated throttle position sensor within the throttle body can fail, or the throttle plate itself can stick. Wiring harness issues are also common, especially near the throttle body connector.
Questions to Ask Your Mechanic
Did you check the live data for both the APP and TPS sensors, and do the readings correlate correctly with pedal input?
Good answer: Yes, I monitored both sensors. The APP sensor 'B' circuit was showing erratic voltage, or the TPS 'B' circuit was stuck at a certain value, even when the pedal was moved. This points to a sensor or wiring issue.
Have you inspected the wiring harness and connectors for corrosion or damage leading to the APP and TPS sensors?
Good answer: Yes, I thoroughly checked the wiring from the PCM to both sensors. I found some corrosion at the throttle body connector, or a frayed wire near the accelerator pedal, which I repaired.
Repair Cost Estimate
DIY Repair
Parts only
$100-$300
Shop Repair
Parts + labor
$250-$700
Save $150-$400 by doing it yourself
Difficulty
intermediate
Time
1-3 hours
Intermediate - requires a scan tool for live data monitoring and a multimeter for electrical testing, along with basic mechanical skills.
Cost of Waiting
Ignoring P0220 is extremely dangerous. You risk sudden loss of power, uncontrolled acceleration, or stalling while driving, which can lead to serious accidents. A $100-$300 sensor replacement now prevents a potentially life-threatening situation and avoids further damage to the throttle body or engine computer.
While You're In There...
If you are accessing the throttle body to replace the TPS, it's a good time to clean any carbon buildup that could affect its operation.
A dirty air filter can restrict airflow and sometimes contribute to throttle response issues, and it's often removed to access the throttle body.
Tools You'll Need
- OBD-II Scan Tool
- Multimeter
- Basic Socket Set
- Screwdrivers
- Wire Strippers/Crimpers (if repairing wiring)
P0220 is a serious code because it affects your vehicle's drivability and safety, but it's a common issue with a clear diagnostic path. Once the faulty sensor or wiring is replaced, your vehicle's throttle response will be restored, and you'll be back on the road safely.
- Family-owned since 1957
- 990,000+ happy customers
- Fast nationwide shipping
- Easy returns
Your Next Steps
Step 1: Conduct a thorough visual inspection of the wiring and connectors for both the Accelerator Pedal Position (APP) sensor and the Throttle Position Sensor (TPS). Look for any signs of damage, corrosion, or loose connections.
Step 2: Use an OBD-II scan tool to monitor live data from both the APP and TPS sensors. Observe their voltage readings as you slowly press and release the accelerator pedal. Look for any erratic jumps, flat lines, or values that don't correspond to pedal movement.
Step 3: If sensor readings are inconsistent, use a multimeter to test the power, ground, and signal wires at the sensor connectors. If the wiring is good, replace the suspected faulty sensor (either the APP sensor or the TPS, or the entire throttle body if the TPS is integrated).