P0335 code, will not start

Tiny
MARTYBECK
  • MEMBER
  • 2003 VOLVO S40
  • 1.9L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 90,000 MILES
I got P09335, P0336. And P0341 codes. I replaced the camshaft and crankshaft sensors and still get the P0336 code and it wont start. Thanks for any help you can offer.
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Friday, June 21st, 2019 AT 10:29 PM

4 Replies

Tiny
SCGRANTURISMO
  • EXPERT
Hello,

I have included in the diagrams down below for you, a factory diagnostic troubleshooting guide that will take you step by step through the process needed to find and fix your vehicle's problem when Direct Trouble Code (DTC) P0335 is set. Please go through this guide and get back to us with what you are able to find out.

Thanks,
Alex
2CarPros
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Saturday, June 22nd, 2019 AT 12:51 AM
Tiny
MARTYBECK
  • MEMBER
Thanks for the detailed answer. (I had a typo that I assume didn't throw you. It is P0335 without the 9.). I did what your guide told me. Measured the speed sensor for about 300 ohms and found the 1.8 volts above ground on both leads. All the wiring looks fine. So today I put in another ECU from a salvage yard and it didn't change the codes. For the record, the codes fluctuate as I do experiments and sometime only one or two of the three codes comes up. Makes it more confusing. For example I changed the Cam Sensor and that code went away for a while and I only got the 335 and 336 codes. Now I have all three. P0335, P0336, and P0341. By the way, the engine does not run at all.
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Saturday, June 22nd, 2019 AT 8:33 PM
Tiny
MARTYBECK
  • MEMBER
Sure enough the diagnosis is in. The timing belt has slipped and the sensors are doing their job of not letting the engine start. My guess is the tensioner is broken. Will find out when I get more of this apart. The compression was low on all four cylinders and I noticed the lack of tension in the belt. Must be the tensioner.
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Sunday, June 23rd, 2019 AT 11:44 PM
Tiny
KEN
  • ADMIN
Glad you could get it fixed, that kind of problem can be tough. Please use 2CarPros anytime we are here to help.
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Monday, June 24th, 2019 AT 2:29 PM

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