Codes P0037, P0335, P2103, P0553, B2089, C3F20, hard starting when cold and shuts off while drivong?

MYKAH2024

MEMBER
2007 HYUNDAI SONATA
3.3L
V6
2WD
AUTOMATIC
195,000 MILES

For some time now, I av had a problem starting my car, especially in the morning and when I was in transit and parked for some hours. So, let's just say hard starting the car when engine is cold.
Other observation is that when the car starts it won't run smoothly until I off and on it like two to three times before it runs smoothly.
Also, the car stalls while driving even at the normal running temperature and when starting it again, it will be giving the hard start of the early morning.
I have contacted some technician to help look at it, but the problem persists.
I ran a scan with an OBD II scanner, and the following are the result:
1). P0037
2). P0335
3). P2103
4). P0553
5). B2089
6). C3F20
Kindly help look into it.

5 Replies

KEN L

MASTER CERTIFIED MECHANIC
47,536 POSTS

So, we only handle one problem per thread so you will need to start new threads for the 4 codes below the two we will handle on this thread.

P0335: Crankshaft Position Sensor A Circuit Malfunction

P2103: Throttle Actuator Control Motor Circuit High

The first code that may cause the second code is the crankshaft sensor malfunction so we should address that first. Here is the location of the crankshaft sensor which I would swap out and then clear the codes to see what happens.

Please start new threads for these.

P0037: HO2S Heater Control Circuit Low (Bank 1, Sensor 2)

P0553: Power Steering Pressure Sensor Circuit High

B2089: Front Seat Belt Buckle Switch (Driver Side) Circuit Malfunction

C3F20: Chassis Control System Fault (Custom Code)

Check out the images (below). Please let us know what happens.

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Monday, June 24th, 2024 AT 10:50 AM

MYKAH2024

MEMBER
3 POSTS

Thank you for your swift response. I located the crankshaft sensor for inspection and everything is okay. What do I check next?
Thank you

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Wednesday, July 3rd, 2024 AT 8:49 AM

KEN L

MASTER CERTIFIED MECHANIC
47,536 POSTS

Did you replace the sensor and clear the codes? If so how does the engine seem to run? I wanted to ask if all off these codes came up at once? If so you may have a bad PCM.

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Wednesday, July 3rd, 2024 AT 1:28 PM

MYKAH2024