P0321 OBD-II Trouble Code: Ignition/Distributor Engine Speed Input Circuit Range/Performance

Our certified mechanics come to you · 12-month, 12,000-mile warranty

SCHEDULE P0321 DIAGNOSTIC Get a fair and transparent estimate upfront
Red-stars EXCELLENT RATING ON

Cost of diagnosing the P0321 code

P0321 is a diagnostic trouble code (DTC) for "Ignition/Distributor Engine Speed Input Circuit Range/Performance". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$20.00
Toyota$20.00
BMW$20.00
SCHEDULE P0321 DIAGNOSTIC Get a fair and transparent estimate upfront

P0221 code definition

Ignition/Distributor Engine Speed Input Circuit Range/Performance

What the P0221 code means

P0221 is an OBD-II generic code that the engine control module (ECM) detected the engine speed input sensor circuit out of range or its performance is not within specifications. The sensor may also be called a RPM sensor.

What causes the P0221 code?

  • The engine speed sensor open or shorted internally that would cause the engine to stall or not start.

  • The wiring or connection to the speed sensor is getting shorted or losing connection intermittently.

What are the symptoms of the P0221 code?

  • The Check Engine Light will be illuminated and the code is set in ECM memory.
  • The engine would stall or not start if failure is present.
  • The engine will have a misfire and may buck or jerk while driving for an intermittent connection.

How does a mechanic diagnose the P0221 code?

  • Scans codes and documents the freeze frame data in order to verify the problem.

  • Clears the engine and ETC codes and road tests to verify the concern comes back.

  • Visually checks the wiring and connections to the engine speed sensor for loose or damaged wiring connections.

  • Disconnects and checks the resistance and signal voltage from the engine speed sensor.

  • Checks for any corrosion in the sensor connections.

  • Checks the sensor reluctor wheel for breakage or damage.

Common mistakes when diagnosing the P0221 code

  • Failing to check the air gap of the engine speed sensor for intermittent failures or loss of signal.

  • Failure to repair oil leaks onto the sensor before replacing the sensor.

How serious is the P0221 code?

  • A failed engine speed sensor will cause the engine to stall or not run at all.

  • An intermittent engine speed signal from the sensor can cause the engine to run rough, stall, jerk, or misfire while driving.

What repairs can fix the P0221 code?

  • Replacing the faulty engine speed sensor.
  • Replacing a broken reluctor ring on the crankshaft or damper.
  • Repairing corroded connections to the engine speed sensor.

Additional comments for consideration regarding the P0221 code

Code P0221 is triggered when the engine speed sensor does not generate a signal to keep the engine running.

Need help with a P0221 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6220.

trouble codes
P0321
Check Engine Light

Fast and easy Check Engine Light is on Inspection service at your home or office.

SCHEDULE P0321 DIAGNOSTIC
Get a fair and transparent estimate upfront

Recent Check Engine Light is on Inspection reviews

Excellent Rating


YourMechanic Check Engine Light is on Inspection Service

Average Rating

4.8/5

Number of Reviews

4,810

Rating Summary
4,424
187
47
28
124
4,424
187
47
28
124

Joel

19 years of experience
741 reviews
Joel
19 years of experience
Acura RL - Check Engine Light is on - Jacksonville, Florida
very knowledgeable and precise. able to fix electrical issues in my car. Right on time for the appointment.

Christopher

15 years of experience
41 reviews
Christopher
15 years of experience
Honda Accord - Check Engine Light is on - Fairburn, Georgia
Christopher was excellent! He explained everything in detail to make sure I understood. He was professional and provided me with the next course of actions to resolve my care issues. I'm glad he was sent to service my car.

Alexander

18 years of experience
58 reviews
Alexander
18 years of experience
Saab 9-7x - Check Engine Light is on - Kissimmee, Florida
He was very friendly and very helpful . I felt like it was being around a close friend , also gave me so very good advice on my car & future advice about it . Highly recommend mechanic, would use his services again .

Matthew

31 years of experience
639 reviews
Matthew
31 years of experience
Jeep Patriot - Check Engine Light is on - Norfolk, Virginia
Matthew was on time which was a relief, he is very knowledgeable and was easy to understand what was wrong and what was being done. I am recommending to friends and family due to the great experience Matthew gave me. Extremely professional 10/10

More related articles

P0735 OBD-II Trouble Code: Gear 5 Incorrect Ratio
P0735 code means that the automatic transmission cannot be shifted into 5th gear often caused by low/dirty transmission fluid, or blockages.
P0609 OBD-II Trouble Code: Control Module VSS Output "B" Malfunction
P0609 code means there is an malfunction in the vehicle speed sensor output from the PCM often due too corroded wires or an defective control module.
P2609 OBD-II Trouble Code: Intake Air Heater System Performance
P2609 P2609 code definition A P2609 trouble code indicates that the PCM has detected abnormal voltage readings from one or more of the intake air heater circuits. This particular trouble code is most often associated with trouble codes P2604, P2605,...

Related questions

Front exhaust pipe/check engine light

The flex pipe is a common repair on your car. Most shops just weld in a new one, or that section of pipe can be replaced as a whole. Almost every time I would see and hear the pipe leaking...

Hello I have a 2006 f150 XLT with a 2v 4.6. It has a cold air intake from k

Hi, thanks for writing in. I'd be happy to help you. Code P2104 relates the throttle position control actuator, and code P2126 relates to the throttle position sensor. When either of these components is not working properly, this can cause...

rough idle and misfiring at stops

Lets start with what the codes mean. P0060 - indicates that there is a network failure to the ECU. One or more control modules are not communicating. This is usually caused by a bad ECU, poor electrical connections from corrosion...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 · hi@yourmechanic.com