Volvo AWD C70 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 10/2020 C70 INDEX

[<<]  [>>]


 VIEW    REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

CEL, "engine system service' displayed, no AC? C70 2007

posted by  KlausC on  Sun Jun 12 13:54 CST 2016
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Fri Oct 24 10:15 CST 2014
[RELATED]

Substitute value:
Calculated boost pressure
Calculated air mass
Rear heated oxygen sensor (HO2S) control shut off
Misfire diagnostic shut off.

Possible source:
Contact resistance or oxidation in the mass air flow (MAF) connectors
Air leakage in the intake system
Blocked intake system
Damaged mass air flow (MAF) sensor.

Fault symptom:
Malfunction indicator lamp (MIL) lit
Poor performance.

Because you get a 0.00 reading on the MAF, check the connector first. Most MAF errors are a result of getting dirty and producing low values, not zero.

--
Keeping it running is better than buying new






THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD

New CEL, &quot;engine system service' displayed, no AC? [C70][2007]
posted by  Erwin  on Sat Jun 11 13:52 CST 2016 >


<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.