P0336 code - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

flyinglow57 · 10-13-2019, 01:18 PM

I did a total rebuild of the engine got it back together and started just fine good oil pressure. Now when i took it for a quick test drive it has a miss and stumbles as I accelerate. Blinking check engine light came one with p0336 code which is

P0336 is a diagnostic trouble code (DTC) for "Crankshaft Position Sensor A Circuit Range/Performance".

I replaced the crank sensor and get the exact same thing.
I cleared the code and turned the key off then back on and read codes and the p0336 was back in there again without even starting the car

InFiD3ViL · 10-14-2019, 01:04 PM

Are you certain you got every single ground wire connected?
Didn't pinch the sensor wire during reinstall?

dino2012ls3 · 10-14-2019, 01:39 PM

Check you volts going to it

flyinglow57 · 10-14-2019, 02:42 PM

I cant find a clear wire diagram of a 2010 camaro crank sensor. The colors are yellow/blk stripe. Green. Then purple/ white stripe. What should be what. Then when i get up into the engine bay further up there ate twi purple with white stripes. Wtf chevy.

What gauge is the wire for the crank. Ill just run 3 new wires. From crank to near the computer.

flyinglow57 · 10-14-2019, 02:59 PM

Quote:

Originally Posted by InFiD3ViL

Are you certain you got every single ground wire connected?
Didn't pinch the sensor wire during reinstall?

Got a single one back of pass head a group of 6 or so on pass head middle. Big main ground front of Pass head. Then one on front of drivers block and one on back of drivers head

Witt51 · 10-15-2019, 12:14 PM

I believe there is one on the back of the passenger side head.

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flyinglow57 · 10-16-2019, 10:22 AM

Quote:

Originally Posted by flyinglow57

Got a single one back of pass head a group of 6 or so on pass head middle. Big main ground front of Pass head. Then one on front of drivers block and one on back of drivers head

Quote:

Originally Posted by Witt51

I believe there is one on the back of the passenger side head.

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Reading comprehension

Witt51 · 10-16-2019, 10:40 AM

Ok

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flyinglow57 · 10-21-2019, 06:19 PM

Spent a little time today. I have it narrowed down to
5 volts on one position constant
Ground in one position
And the sensor a position had 2.5 volts. I clipped the wire 3” from the ecu and still have 2.5 volts coming from the ecu to the yellow/blk wire that goes to crank sensor signal wire

Why would the wire have 2.5 volts out of the ecu When its the signal wire from the crank. Shouldnt it be 0 until the crank sensor reads the reluctor wheel?

G8One2 · 10-21-2019, 07:11 PM

The ECU outputs a 5v reference signal to the cranks sensor. 2.5v is a good reading if he was back probing it while connected, but doesnt mean its what the ECM is looking for either. The crank sensor is just a magnet that creates a hall effect as the nubs on the trigger wheel pass by it. The crank sensor should have a resistance reading of less than 5 Ohms. If its open, or the resistance is higher than 5 Ohms, the sensor is likely defective. The circuit going TO the sensor, should also be checked for excessive resistance, from an unplugged ECM connector. Anything more than 5 ohms is considered excessive, and if its close to 5 Ohms I'd still attempt to improve or repair the circuit.

G8One2 · 10-21-2019, 07:16 PM

Also, Ive seen many times, people shove paper clips and whatever else inside the connectors to test circuits. If the paperclip is too large, it will spread the female pin to where it wont make a good contact when you plug it back in. It may still connect, but barely touching the male pin on the other connector, which causes a high resistance value, and tends to throw circuit low, or circuit high faults.

G8One2 · 10-21-2019, 07:20 PM

Oh, and a bent, or otherwise damaged trigger wheel can also throw range performance faults. Not saying that's whats going on, but for sure a possibility since the engine was just rebuilt. All it takes is for someone to drop it on the floor, or pry on it, mishandle it in some way to damage it.

flyinglow57 · 10-21-2019, 07:30 PM

Crank sensor is totally disconnected. Key on. 5v goin to reference 2.5v going to signal both from ecu

Im not back probing anything. The 2.5 i was wondering if i was getting a bad connection through the crank sensor plug so i snipped the signal wire 3” from the ecu stripped it and it has 2.5v

G8One2 · 10-21-2019, 07:47 PM

Going through the sensor, that would be an acceptable reading. I would suspect something wrong with the trigger wheel, only because I've seen the same fault with trigger wheels on camshafts that are broke. But I would be doing exactly what your doing, checking the circuits first to make sure it's 100% not that.

10-13-2019, 01:18 PM	#1
flyinglow57 Drives: rumble bee,2SS 6sp Join Date: May 2009 Location: pittsburgh, PA Posts: 539	P0336 code I did a total rebuild of the engine got it back together and started just fine good oil pressure. Now when i took it for a quick test drive it has a miss and stumbles as I accelerate. Blinking check engine light came one with p0336 code which is P0336 is a diagnostic trouble code (DTC) for "Crankshaft Position Sensor A Circuit Range/Performance". I replaced the crank sensor and get the exact same thing. I cleared the code and turned the key off then back on and read codes and the p0336 was back in there again without even starting the car __________________ blk 2ss 6spd with sunroof. intake,tsp cam,full exhaust,pcmforless tune,trailing arms,toe rods. hopeing for 11.9 because my g/f said she will take the cam and the suspension back if not. Last edited by flyinglow57; 10-13-2019 at 01:32 PM.

10-14-2019, 01:04 PM	#2
InFiD3ViL Drives: 2010 CGM 2SS/RS LS3 Swapped A6 Join Date: Sep 2016 Location: Spring Hill, FL Posts: 4,620	Are you certain you got every single ground wire connected? Didn't pinch the sensor wire during reinstall? __________________ 2010 CGM Camaro 2SS LS3 Swapped A6 - GPI LS3 SS1 .647/.638, (224/237, 112 +4, 7º overlap) on CamMotion 8620 core, BTR Platinum .660" Dual Spring kit w/titanium retainers, CHE bronze trunnion upgrade, stock heads milled @ .015, Melling HV 10296 oil pump, TSP 1-7/8" long tube headers (W/Catless Off-road Pipes), Corsa Xtreme 3" Catback, GPI Ported/Rod Mod Intake, Stage 2 Ported Throttle Body, Vararam OTR CAI, Mike Norris Gen 2 catch can + GM 1LE clean side separator, 160º thermostat - Megan Racing adjustable coilovers (lowered 1.75"), MRR M017 10/11" wheels-Tuned by Ryan @ GPI

10-14-2019, 02:42 PM	#4
flyinglow57 Drives: rumble bee,2SS 6sp Join Date: May 2009 Location: pittsburgh, PA Posts: 539	I cant find a clear wire diagram of a 2010 camaro crank sensor. The colors are yellow/blk stripe. Green. Then purple/ white stripe. What should be what. Then when i get up into the engine bay further up there ate twi purple with white stripes. Wtf chevy. What gauge is the wire for the crank. Ill just run 3 new wires. From crank to near the computer. __________________ blk 2ss 6spd with sunroof. intake,tsp cam,full exhaust,pcmforless tune,trailing arms,toe rods. hopeing for 11.9 because my g/f said she will take the cam and the suspension back if not.

10-21-2019, 06:19 PM	#9
flyinglow57 Drives: rumble bee,2SS 6sp Join Date: May 2009 Location: pittsburgh, PA Posts: 539	Spent a little time today. I have it narrowed down to 5 volts on one position constant Ground in one position And the sensor a position had 2.5 volts. I clipped the wire 3” from the ecu and still have 2.5 volts coming from the ecu to the yellow/blk wire that goes to crank sensor signal wire Why would the wire have 2.5 volts out of the ecu When its the signal wire from the crank. Shouldnt it be 0 until the crank sensor reads the reluctor wheel? __________________ blk 2ss 6spd with sunroof. intake,tsp cam,full exhaust,pcmforless tune,trailing arms,toe rods. hopeing for 11.9 because my g/f said she will take the cam and the suspension back if not.

10-21-2019, 07:11 PM	#10
G8One2 Drives: 2014 Camaro 2SS Join Date: Feb 2015 Location: Metro Detroit Posts: 492	The ECU outputs a 5v reference signal to the cranks sensor. 2.5v is a good reading if he was back probing it while connected, but doesnt mean its what the ECM is looking for either. The crank sensor is just a magnet that creates a hall effect as the nubs on the trigger wheel pass by it. The crank sensor should have a resistance reading of less than 5 Ohms. If its open, or the resistance is higher than 5 Ohms, the sensor is likely defective. The circuit going TO the sensor, should also be checked for excessive resistance, from an unplugged ECM connector. Anything more than 5 ohms is considered excessive, and if its close to 5 Ohms I'd still attempt to improve or repair the circuit. Last edited by G8One2; 10-21-2019 at 07:12 PM. Reason: Re-wording

10-14-2019, 01:39 PM	#3
dino2012ls3 Drives: 2012 ls3 Join Date: Feb 2014 Location: humble Posts: 116	Check you volts going to it

10-15-2019, 12:14 PM	#6
Witt51 Drives: Black 2ss Join Date: Aug 2011 Location: Illinois Posts: 232	I believe there is one on the back of the passenger side head. Sent from my SM-N975U using Tapatalk

10-16-2019, 10:40 AM	#8
Witt51 Drives: Black 2ss Join Date: Aug 2011 Location: Illinois Posts: 232	Ok Sent from my SM-N975U using Tapatalk

10-21-2019, 07:16 PM	#11
G8One2 Drives: 2014 Camaro 2SS Join Date: Feb 2015 Location: Metro Detroit Posts: 492	Also, Ive seen many times, people shove paper clips and whatever else inside the connectors to test circuits. If the paperclip is too large, it will spread the female pin to where it wont make a good contact when you plug it back in. It may still connect, but barely touching the male pin on the other connector, which causes a high resistance value, and tends to throw circuit low, or circuit high faults.

10-21-2019, 07:20 PM	#12
G8One2 Drives: 2014 Camaro 2SS Join Date: Feb 2015 Location: Metro Detroit Posts: 492	Oh, and a bent, or otherwise damaged trigger wheel can also throw range performance faults. Not saying that's whats going on, but for sure a possibility since the engine was just rebuilt. All it takes is for someone to drop it on the floor, or pry on it, mishandle it in some way to damage it.

10-21-2019, 07:30 PM	#13
flyinglow57 Drives: rumble bee,2SS 6sp Join Date: May 2009 Location: pittsburgh, PA Posts: 539	Crank sensor is totally disconnected. Key on. 5v goin to reference 2.5v going to signal both from ecu Im not back probing anything. The 2.5 i was wondering if i was getting a bad connection through the crank sensor plug so i snipped the signal wire 3” from the ecu stripped it and it has 2.5v __________________ blk 2ss 6spd with sunroof. intake,tsp cam,full exhaust,pcmforless tune,trailing arms,toe rods. hopeing for 11.9 because my g/f said she will take the cam and the suspension back if not.

10-21-2019, 07:47 PM	#14
G8One2 Drives: 2014 Camaro 2SS Join Date: Feb 2015 Location: Metro Detroit Posts: 492	Going through the sensor, that would be an acceptable reading. I would suspect something wrong with the trigger wheel, only because I've seen the same fault with trigger wheels on camshafts that are broke. But I would be doing exactly what your doing, checking the circuits first to make sure it's 100% not that.