Acura EL Honda Civic Crankshaft Position Sensor - 1AECS00053

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How-To & Tools
Product Reviews
Vehicle Fit

A bad or malfunctioning crankshaft angle sensor will often cause a service engine light error code, and or cause a no start condition, or rough running due to inaccurate ignition and fuel timing.


  • Built to strict quality control standards
  • Replaces dealer part number: 37500-PLC-015, 37500PLC015
  • Direct replacement
  • 100% factory tested
  • Fits models with L4 1.7L Engine only

This is an electrical part and is tested before it leaves our warehouse.

Our electrical and electronic parts are subject to strict quality control testing. Please ensure proper diagnosis of this item before purchasing as the item cannot be returned once installed or plugged in.

Item Condition: New

Attention California Customers:

WARNING:  This product can expose you to chemicals including Lead and Lead Compounds, which are known to the State of California to cause cancer, and birth defects or other reproductive harm.  For more information, go to

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser.

  1. step : Removing the Wheel (0:42)
    • Loosen the 19mm lug nuts with the vehicle on the ground
    • Raise the vehicle with a floor jack
    • Secure the vehicle on jack stands
    • Remove the lug nuts
    • Pull off the wheel
  2. step : Removing the Power Steering Pulley (1:04)
    • Pry off the push connectors from the inside of the splash shield
    • Loosen the 10mm adjusting bolt
    • Loosen the 12mm adjusting nut near the power steering belt pulley
    • Loosen the 12mm pivot bolt
    • Remove the adjusting bolt
    • Remove the power steering belt
    • Remove the bolts
    • Lift the reservoir and pump up and out
  3. step : Removing the Alternator Belt (2:45)
    • Remove the boot below the wiring harness
    • Remove the 10mm nut holding the battery cable
    • Press the tab and disconnect the alternator wiring harness
    • Loosen the 12mm adjustment locking bolt at the bottom
    • Loosen the 14mm bolt atop the alternator
    • Loosen the adjustment bolt (wing nut) with a pair of pliers
    • Press the alternator down and in
    • Remove the belt
  4. step : Removing the Harmonic Balancer (4:18)
    • Remove the 19mm bolt on the crank pulley with a Honda holding tool, a strap wrench, and extension and breaker bar
    • Remove the pulley from the crankshaft
    • Remove the key stop
  5. step : Removing the Engine Crank Sensor (5:38)
    • Remove the connector on the rear side of the engine
    • Disconnect it from the lower engine retainer
    • Remove the four bolts on the lower engine cover
    • Remove the lower timing cover and seal
    • Remove the 10mm bolt on the crank position sensor
    • Remove the sensor
  6. step : Installing the Engine Crank Sensor (6:40)
    • Insert the sensor into its slot
    • Tighten the 10mm bolt to the sensor
    • Reinstall the wiring harness
    • Insert the timing cover into place
    • Tighten the four bolts to the lower engine cover
    • Remove the crank pulley bolt from the crank shaft
  7. step : Installing the Harmonic Balancer (7:50)
    • Insert the key stock into the slot on the crank
    • Align the crank pulley
    • Insert the Honda holder tool and tighten with a 19mm socket
  8. step : Installing the Alternator Belt (8:30)
    • Feed the belt down in around the alternator
    • Re-tension the alternator
    • Insert the power lead and the 10mm power-lead nut into place
    • Insert the power steering pulley into place
    • Put the upper 12mm bolt into place
    • Insert the tensioner into the pump
    • Hand-tighten the nut to the back of the tensioner
    • Install the tensioner bolt
    • Loosen the tensioner
    • Tighten the 10mm bolt to the bracket
    • Tighten the tensioner
    • There should be about 1/4" of play on the belt
    • Tighten the 12mm nut on the back of the power steering tension bolt
    • Tighten the 12mm nut on the bottom of the power steering pump
    • Reinstall the power steering reservoir
    • Reconnect the battery cable
    • Run the engine for five minutes
    • Check the tension and adjust
    • Tighten the push connectors to the splash shield
  9. step : Reattaching the Wheel (11:43)
    • Slide the wheel into place
    • Start the lug nuts by hand
    • Tighten the 19mm lug nuts preliminarily
    • Lower the vehicle to the ground
    • Tighten the lug nuts to 80 foot-pounds in a crossing or star pattern

Tools needed for replacement:

    General Tools

  • Jack Stands
  • Floor Jack

  • Ratchets & Related

  • Ratchet
  • Torque Wrench
  • Socket Extensions
  • 1/2 Inch Breaker Bar

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • 19mm Socket
  • 10mm Socket
  • 14mm Socket
  • 12mm Socket

  • Specialty Tools

  • Honda Crank Holding Tool

1.00/ 5.0
5 reviews
5 Stars
4 Stars
3 Stars
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1 Star
Crank sensor 05 civic
In my case it did not work.i had to purchase from the dealer it set diff code for intermittent signal dealer sensor fixed it
February 27, 2017
Bad part.
I got this part earlier this month and had it replaced in my car, but to find out, my car wouldnt start. 1AAuto wants to pay for another one in full in order to get it. So I went to autozone and bought one. Ive gotten all my parts from here, but now I am second guessing about their electrical products.
April 22, 2017
Bought this sensor for my Honda Civic 2005 it had no signal thought I had a computer /key problem had it towed racked me $589 bucks for a crankshaft sensor from 1a auto biggest rip ever on a car part and look it up what it takes to replace it haha the jokes on me
July 7, 2017
Sensor failed, shipping amazing.
Paid for one day shippimg and it came in one day. Problem was after taking whole timing stuff apart to install, it failed. Needed car so bought one at ORellys for $85, in stalled and it worked.
November 14, 2017
Bad part
I was replacing the timing belt and water pump already so I thought it would be good to replace this sensor. Car has over 200,000 miles.installed new part, put car back together and car was hard to start. When it did start gave code for CPS intermittent. Took it back apart and installed old sensor, car starts fine. Should have listened to the reviews about this part.
November 25, 2018
Will this fit my car? Add a vehicle to make sure
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Year Make Model Description
2001-2003Acura EL Acura EL Crankshaft Position Sensor
2001Honda Civic Honda Civic Crankshaft Position Sensor
2002-2005Honda Civic Honda Civic Crankshaft Position Sensor L4 1.7L
Part #: 1AECS00053

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How-to Video:

(12:22 min)