PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

screwy codes, C0237, C0240

Thread Tools
 
Search this Thread
 
Old Aug 1, 2006 | 02:57 PM
  #1  
Phoenix 5.7's Avatar
Thread Starter
TECH Junkie
iTrader: (7)
 
Joined: Aug 2004
Posts: 3,809
Likes: 0
From: Prairie de Femme, LA
Default screwy codes, C0237, C0240

im gettin a few wierd codes when i scan now. just started gettin them. idk if ive always had them and if HP Tuners just started being able to read them(i think they are BCM codes), or if they are new. im gettin these codes:

C0237 - Rear Wheel Speed Signal Erratic (History)
C0240 - Unknown (History)
do these affect anything? and should i try to fix them?

also been gettin these, MAF is cause its not even connected for SD, and the TP sensor is something screwy sometimes, doesn't really seem to affect anything but turning off my TCS. doubt they are affecting the other 2 new ones, but figured it might help diagnose
P0103 - Mass Air Flow (MAF) Sensor Circuit High Frequency
P0121 - TP Sensor Circuit Insufficient Activity
Reply
Old Aug 1, 2006 | 06:23 PM
  #2  
Phoenix 5.7's Avatar
Thread Starter
TECH Junkie
iTrader: (7)
 
Joined: Aug 2004
Posts: 3,809
Likes: 0
From: Prairie de Femme, LA
Default

anyone?
Reply
Old Oct 11, 2006 | 08:59 AM
  #3  
Killer_Bluebird's Avatar
TECH Enthusiast
iTrader: (23)
 
Joined: Mar 2004
Posts: 673
Likes: 0
From: North Olmsted, OH
Default

I'm getting the "C0240 - Unknown (History)" also after I installed my cam. Most of the other codes I had I got them tuned out. But I don't know about this one either.

As far as your Maf codes. I believe under Engine Diagnostics you can set the "MAF Fail High" to 0 Hz if you are runinng SD tune and Look at you Logs an see what your MAP kPa is at idle and set the "P021 Error Max Map" just above that.

Hope this helps. If I find what that other code is when talk to my tuner today I'll let you know.
Reply




All times are GMT -5. The time now is 08:22 AM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE