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06 XC70 REDUCED ENGINE PERFORMANCE + glitching DIM

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shodanx
Posts: 18
Joined: Mon Dec 10, 2018 8:04 pm
Year and Model: xc70 2001
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shodanx

06 XC70 REDUCED ENGINE PERFORMANCE + glitching DIM

Post by shodanx » Sat Jun 27, 2020 11:07 pm

Hi,

Yesterday I drove home (65km) my 5th XC70 in a year and a half.

Main issues are lack of power, message "REDUCED ENGINE PERFORMANCE and non functional instrument cluster

Got my codes here
fault trace initial state.png
After ERASE ALL
fault trace initial state after erase all.png
Car config
vehicle config.png
VIDA DIAGNOSTIC NETWORK TAB
2020-06-27 19_18_28-Greenshot.png
Regarding the DIM, none of the needles move, LCDs are garbled EXCEPT the information panel at the left side

This panel has the following error messages
REDUCED ENGINE PERFORMANCE
ENGINE SYSTEM SERVICE REQUIRED
PARK ASSIST SERVICE REQUIRED
BULB FAILURE POSITION LIGHT
FOUR-C SERVICE REQUIRED

A/C is non funcitonal, relay is probably removed

I have checked nothing so far except the codes and reading on this forum.

My initial guess is that codes ECM-941D ECM-970B accelerator pedal AP sensor signal missing / too low are the cause of the reduced performance message and lack of power.

Strange thing though is I have good throttle control. The engine feels anemic but it will rev in proportion to how I push on the pedal. While driving I reached a maximum speed of 102KM/H. I maintained speeds between 75 and 100 KM/H depending on grade and the good will of the transmission.

ECU-box cooling fan, I have read in another post on this forum that this could also cause the issue, ambient temperatures at this time of year are around 25C.

DIM failure could be unrelated ?

So much red on the NETWORK tab though, could there be a CANBUS problem ? Frayed wiring somewhere shorting out the bus maybe.

Has anyone ever tried running wireshack in CANBUS sniffing mode on these cars ?
From what I understand, there are only 1 high speed bus and one low speed bus ? Maybe I could sniff the buses and just clear the health of the bus ?


Here are the threads I have reviewed already on this subject, it is inconclusive EXCEPT for ECM-680B ECU-box cooling fan - Signal missing.

Reduced Engine Performance
viewtopic.php?f=9&t=92642
not helpful, experienced limp mode, no clue and not resolved


02 V70XC - Crank but no start, "engine performance reduced"
viewtopic.php?f=9&t=80835
Associated with "Brake failure - Stop Safely" and codes P0016 P0304 CEM-1C02 ECM-3000 ECM-5200, not resolved

2006 S60R Reduced Engine Performance
viewtopic.php?f=9&t=88470
Problem appeared after thermostat hsg replacement, had code P2111 TAC System Stuck Open, fixed with throttle body reboot

CEL and reduced engine performance
viewtopic.php?f=9&t=87592
Replaced crank and throttle position sensor, only occasional performance reduced message, user did not report back if fixed, vacuum leak ruled out by using obd2 application and reading vacuum values

2002 V70 xc turbo, no codes but running poorly, clean ETB?

Engine swapped now limp mode - 02 XC70
viewtopic.php?f=9&t=82618
Suggested accessories were incompatible with new engine, no resolution

2002 XC70 reduced power mode - not ETM
viewtopic.php?f=9&t=79721
Had codes ECM - 903C permanent fault, 9150,9160,9170 and reduced engine performance
Replaced ETM, clearing code temporarily fix issue, had low battery, ETM replaced but no effect
Re-seat ECM was suggested. User replaced battery and removed foreign device tied to ignition, issue fixed

2008 S60 2.5T intermittent starting problems
viewtopic.php?f=9&t=79555
replace crank sensor and battery suggested, no resolution

2002 V70 XC AWD Poor running, rookie, Denver thread
viewtopic.php?f=9&t=78875&start=30
not helpful, no resolution

"Reduced Engine Power" Limp Mode
viewtopic.php?f=9&t=74962
Had code p2111- Throttle Actuator Control System - Stuck Open
Goes into limp mode at start, clearing codes clears problem and will not go into limp mode until restart. Throttle body replacement discussed, no resolution

2002 V70 2.4T ECM-5200 Engine sensor, faulty signal
viewtopic.php?f=9&t=73337
intermittend reduced engine performance message, replaced crank sensor, no resolution from user

2003 xc70 Reduced Engine Performance
viewtopic.php?f=9&t=70764
got error once, suspected A/C seizure, no resolution

2007 xc 70 code " reduced engine performance"
viewtopic.php?f=9&t=67986
Occasionally go into limp mode, had TAC code, no resolution

2006 XC70 Road trip madness!
viewtopic.php?f=9&t=60951
Had codes P0089 Fuel Pressure Regulator P0300, P0304, P0305, P0089
Replaced fuel pressure regulator, fuel pump, fuel filter, problem came back after 5 hours and disappeared after restart, PEM and PEM connector suspect but checked clean
User sent PEM to xemodex, no resolution

Reduced Engine Performance
viewtopic.php?f=9&t=41410
Crank no start and reduced engine performance message, no replies no resolution

ETM issue with 2006 xc 70 model
viewtopic.php?f=9&t=41369
Intermittend limp mode, codes 941D and 970B, replaced APM sensor and reprogram
Not fixed and no resolution

Throttle Body Actuator or Fuel pressure Regulator?
viewtopic.php?f=9&t=80749
DTC p2111 stuck open throttle, one user suggest ECM corrosion, another says CEM corrosion from water ingress, ECM re-seating suggested, no resolution

04 XC70 Multiple misfire
viewtopic.php?f=9&t=82382
ended up being a bad coil, user jonesg mention blown ebox cooling fan will cause reduced engine performance HINT HINT HINT

2007 S60 2.5T AWD Fuel Pressure Damper Location
viewtopic.php?f=9&t=80543
Starter issue, drew too much current and triggered reduced engine perf

2002 V70 xc turbo, no codes but running poorly, clean ETB?
viewtopic.php?f=9&t=82041
caused by a bad crank sensor

2002 V70 XC Reduced engine performance
viewtopic.php?f=9&t=89866
unstable rpm, codes p0068, p0014, p0123, and p0223, no resolution

'04 XC Engine Misfiring-Further Updated
viewtopic.php?f=9&t=94179
Suspect air leak, no resolution

Reduced Engine Performance only in the Winter at Code Start
viewtopic.php?f=9&t=79054
Suspect throttle body, MAF and ECM connectors, no resolution

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