club.liberty.asn.au

I have the dreaded engine light and flashing cruise light. Also car coughs and splutters above 4500rpm.
Took it to a general mechanic who cleared codes but they return after a minute or so. He suggested AVCS system - one bank not working and therefore fighting the other bank at 'high' revs. Does that sound right? Can I check/correct it??
It idles happily and up to 4000 rpm - very nice. I need to get a roadworthy to transfer ownership. Won't pass with light bisso.
i took her home for the weekend and have tried to find the codes but din't have much luck. I have just purchased a OBDII/EOBD scan system.

Gave her a full tank of Vpower.... checked petrol cap.... sprayed contact cleaner in AFM and AVCS connections...

Any suggestions or advice would be greatly appreciated.
thanks
Peter

P0011 Intake Camshaft Position Timing - Over-Advanced (Bank 1)
P0021 Intake Camshaft Position Timing - Over-Advanced (Bank 2)
P0030 HO2S Heater Control Circuit (Bank 1 Sensor 1)
P0031 Front oxygen (A/F) sensor heater circuit low input
P0032 Front oxygen (A/F) sensor heater circuit high input _
P0037 Rear oxygen sensor heater circuit malfunction
P0038 Rear oxygen sensor heater circuit high input
P0065 Air assist injector solenoid valve malfunction
P0066 Air assist injector solenoid valve circuit low input
P0067 Air assist injector solenoid valve circuit high input
P0101 Mass air flow sensor circuit range/performance problem (high input)
P0102 Mass air flow sensor circuit low input
P0103 Mass air flow sensor circuit high input
P0106 Pressure sensor circuit range/performance problem (low input)
P0107 Pressure sensor circuit low input
P0108 Pressure sensor circuit high input
P0111 Intake air temperature sensor circuit range/performance problem
P0112 Intake air temperature sensor circuit low input
P0113 Intake air temperature sensor circuit high input
P0117 Engine coolant temperature sensor circuit low input
P0118 Engine coolant temperature sensor circuit high input
P0121 Throttle position sensor circuit range/performance problem (high input)
P0122 Throttle position sensor circuit low input
P0123 Throttle position sensor circuit high input
P0125 Insufficient coolant temperature for closed loop fuel control
P0128 Thermostat malfunction
P0130 Front oxygen (A/F) sensor circuit range/performance problem (lean)
P0131 Front oxygen (A/F) sensor circuit range/performance problem (low input)
P0132 Front oxygen (A/F) sensor circuit range/performance problem (high input)
P0133 Front oxygen (A/F) sensor circuit slow response
P0136 Rear oxygen sensor circuit malfunction
P0139 Rear oxygen sensor circuit slow response
P0171 Fuel trim malfunction (A/F too lean)
P0172 Fuel trim malfunction (A/F too rich)
P0181 Fuel temperature sensor A circuit range/performance problem
P0182 Fuel temperature sensor A circuit low input
P0183 Fuel temperature sensor A circuit high input
P0244 Wastegate control solenoid valve malfunction (high input)
P0245 Wastegate control solenoid valve circuit low input
P0246 Wastegate control solenoid valve circuit high input
P0301 Cylinder 1 misfire detected
P0302 Cylinder 2 misfire detected
P0303 Cylinder 3 misfire detected
P0304 Cylinder 4 misfire detected
P0327 Knock sensor circuit low input
P0328 Knock sensor circuit high input
P0335 Crankshaft position sensor circuit malfunction
P0336 Crankshaft position sensor circuit range/performance problem
P0340 Camshaft position sensor circuit malfunction
P0341 Camshaft position sensor circuit range/performance problem
P0420 Catalyst system efficiency below threshold
P0441 Purge control solenoid valve busted
P0442 Evaporative emission control system malfunction
P0444 Evaporative emission control system purge control valve circuit low input
P0445 Evaporative emission control system purge control valve circuit high input
P0447 Evaporative emission control system vent control low input
P0448 Evaporative emission control system vent control high input
P0451 Evaporative emission control system pressure sensor range/performance problem
P0452 Evaporative emission control system pressure sensor low input
P0453 Evaporative emission control system pressure sensor high input
P0456 Evaporative emission control system malfunction
P0457 Evaporative emission control system leak detected (fuel cap loose/off)
P0461 Fuel level sensor circuit range/performance problem
P0462 Fuel level sensor circuit low input
P0463 Fuel level sensor circuit high input
P0464 Fuel level sensor intermittent input
P0480 Cooling fan relay 1 circuit low input
P0483 Cooling fan function problem
P0500 Vehicle speed sensor malfunction
P0502 Vehicle Speed Sensor Low
P0503 Vehicle Speed Sensor High
P0505 Idle Air Control System
P0506 Idle control system RPM lower than expected
P0507 Idle control system RPM higher than expected
P0508 Idle control system circuit low input
P0509 Idle control system circuit high input
P0512 Starter switch circuit high input
P0545 Exhaust gas temperature sensor circuit low input
P0546 Exhaust gas temperature sensor circuit high input
P0604 Internal control module memory check sum error
P0703 Brake switch input malfunction
P0705 Transmission range sensor circuit malfunction
P0710 Transmission fluid temperature sensor circuit malfunction
P0715 Torque converter turbine speed sensor circuit malfunction
P0720 Output speed sensor (vehicle speed sensor 2) circuit malfunction
P0725 Engine speed input circuit malfunction
P0731 Gear 1 incorrect ratio
P0732 Gear 2 incorrect ratio
P0733 Gear 3 incorrect ratio
P0734 Gear 4 incorrect ratio
P0741 Torque converter clutch system malfunction
P0743 Torque converter clutch system (Lock-up duty solenoid) electrical
P0748 Pressure control solenoid (Line pressure duty solenoid) electrical
P0753 Shift solenoid A (Shift solenoid 1) electrical
P0758 Shift solenoid B (Shift solenoid 2) electrical
P0778 2-4 brake pressure control solenoid valve (2-4 brake duty solenoid) circuit malfunction
P0785 2-4 brake timing control solenoid valve (2-4 brake timing solenoid) circuit malfunction
P0852 Park/Neutral Switch Circuit High
P1086 Tumble generator valve #2 (LH) position sensor circuit low input
P1087 Tumble generator valve #2 (LH) position sensor circuit high input
P1088 Tumble generator valve #1 (RH) position sensor circuit low input
P1089 Tumble generator valve #1 (RH) position sensor circuit high input
P1090 Tumble generator valve #1 (RH) malfunction (stuck open)
P1091 Tumble generator valve #1 (RH) malfunction (stuck close)
P1092 Tumble generator valve #2 (LH) malfunction (stuck open)
P1093 Tumble generator valve #2 (LH) malfunction (stuck close)
P1094 Tumble generator valve circuit #1 (open circuit)
P1095 Tumble generator valve circuit #1 (over current)
P1096 Tumble generator valve circuit #2 (open circuit)
P1097 Tumble generator valve circuit #2 (over current)
P1110 Atmospheric pressure sensor low input
P1111 Atmospheric pressure sensor high input
P1112 Atmospheric pressure sensor range/performance problem
P1130 Front oxygen sensor circuit malfunction (open circuit)
P1131 Front oxygen sensor circuit malfunction (short circuit)
P1134 Front oxygen (A/F) sensor microcomputer problem
P1137 Front oxygen (A/F) sensor circuit range/performance problem
P1139 Front oxygen (A/F) sensor #1 heater circuit performance/range problem
P1141 Mass air flow sensor circuit range/performance problem (low input)
P1142 Throttle position sensor circuit range/performance problem (low input)
P1146 Pressure sensor circuit range/performance problem (high input)
P1152 O2 Sensor Circuit Range/Performance (Low) Bank 1 Sensor 1
P1153 O2 Sensor Circuit Range/Performance (High) Bank 1 Sensor 1
P1230 Fuel pump control unit malfunction
P1244 Wastegate control solenoid valve malfunction (low input)
P1245 Wastegate control solenoid valve malfunction (fail-safe)
P1301 Fire due to increased exhaust temperature
P1312 Exhaust temperature sensor malfunction
P1400 Fuel tank pressure control solenoid valve circuit low input
P1420 Fuel tank pressure control solenoid valve circuit high input
P1443 Evaporative emission control system vent control function problem
P1480 Cooling fan relay 1 circuit high input
P1507 Idle control system malfunction (fail-safe)
P1510 Idle air control solenoid valve signal 1 circuit low input
P1511 Idle air control solenoid valve signal 1 circuit high input
P1512 Idle air control solenoid valve signal 2 circuit low input
P1513 Idle air control solenoid valve signal 2 circuit high input
P1514 Idle air control solenoid valve signal 3 circuit low input
P1515 Idle air control solenoid valve signal 3 circuit high input
P1516 Idle air control solenoid valve signal 4 circuit low input
P1517 Idle air control solenoid valve signal 4 circuit high input
P1518 Starter switch circuit low input
P1540 Vehicle speed sensor malfunction 2
P1544 High exhaust temperature detected
P1560 Back-up voltage circuit malfunction
P1590 Neutral position switch circuit high input
P1591 Neutral position switch circuit low input
P1592 Neutral position switch circuit (MT model)
P1594 Automatic transmission diagnosis input signal circuit malfunction
P1595 Automatic transmission diagnosis input signal circuit low input
P1596 Automatic transmission diagnosis input signal circuit high input
P1698 Engine torque control cut signal circuit low input
P1699 Engine torque control cut signal circuit high input
P1700 Throttle position sensor circuit malfunction for automatic transmission
P1701 Cruise control set signal circuit malfunction for automatic transmission
P1703 Low clutch timing control solenoid valve circuit malfunction
P1711 Engine torque control signal 1 circuit malfunction
P1712 Engine torque control signal 2 circuit malfunction
P2088 OCV Solenoid Valve Signal A Circuit Open (Bank 1)
P2089 OCV Solenoid Valve Signal A Circuit Short (Bank 1)
P2092 OCV Solenoid Valve Signal A Circuit Open (Bank 2)
P2093 OCV Solenoid Valve Signal A Circuit Short (Bank 2)
P2096 Post Catalyst Fuel Trim System Too Lean Bank 1
P2097 Post Catalyst Fuel Trim System Too Rich Bank 1
P2101 Throttle Actuator Control Motor Circuit Range/Performance
P2102 Throttle Actuator Control Motor Circuit Low
P2103 Throttle Actuator Control Motor Circuit High
P2109 Throttle/Pedal Position Sensor A Minimum Stop Performance
P2122 Throttle/Pedal Position Sensor/Switch “D” Circuit Low Input
P2123 Throttle/Pedal Position Sensor/Switch “D” Circuit High Input
P2127 Throttle/Pedal Position Sensor/Switch “E” Circuit Low Input
P2128 Throttle/Pedal Position Sensor/Switch “E” Circuit High Input
P2135 Throttle/Pedal Position Sensor/Switch “A/B” Voltage Rationality
P2138 Throttle/Pedal Position Sensor/Switch “D/E” Voltage Rationality
P2227 Barometric Pressure Circuit Range/Performance
P2228 Barometric Pressure Circuit Low Input
P2443: Secondary Air Injection System Switching Valve Stuck Closed Bank 2

could any of these contribute to the problem??? - reving and lights??
Man.....
no wonder the mechanic asked 'how much do you want to spend?"
He said we will do it by trial and error. That's why I brought her home to see if I could assist in diagnosing but without codes it makes it impossible
thanks for the list..
Peter

So why didn't he write down the codes before he cleared it?

rooted catalytic converter

Get a new mechanic

BUDDAH wrote:rooted catalytic converter

didn't i see a new cat on another post costing $6700???
Other posibility before lauching into that?
if it is the cat - do i need to go genuine???
thanks
Peter

hurls wrote:

BUDDAH wrote:rooted catalytic converter

didn't i see a new cat on another post costing $6700???
Other posibility before lauching into that?
if it is the cat - do i need to go genuine???
thanks
Peter

Yep $6700 cheap ? + fitting welcome to the wonderful world of Subaru

I am still having the engine light and flashing cruise problem, been going on for about 1.5 years now. My engine doesn't die at 4500rpm and the warning light only flashes when I top up the fuel tank. The warning light disappears when about 1/3 of the tank is used. When the warning light is on the engine is sluggish from idle to about 3000rpm and it was using around 16L/100km of fuel during moderate use of the throttle and moderate traffic.

The repairers I have spoken to basically downloaded the error codes, and suggest they go fixing by a trail and error method, which I am not willing to approve.

Did you eventually get this problem resolved?

I was having the exact problem, minus the engine performance changes. Check engine light, flashing cruise and no SI-Drive. would come on, i would get it cleared at subaru, who told me i needed two new cats at the very expensive cost of 6000+, thought i would try another mechanic when the light returned. same thing was getting low efficiency from the cats, needing replacement. found a deal for some universal cats installed 1400, but now they rattle against the heat shield metal making it sound like heap of junk which is another annoyance all together, but since then no more check engine light. Mechanic thinks i may have a problem with current flow and earth leakage, causing the computer to malfunction and send raw fuel down the cats, hence why there life was so short at only 70000, still need to get that checked out but. Good luck!!!.

You really need to know what codes the CEL is showing, but it sounds like a P0420. If that is the case there is an easy fix for it on an 2003 or later car. Just tweak the ECU code to not check the rear O2 sensor. The rear O2 sensor's only function is to check cat efficiency so there is no real downside to this 5 minute tweak.

There is comment elsewhere that on 'later' models the rear O2 sensor might be used for 'trimming' A/F ratios, can anyone comment on truth of this for Subaru ECUs and if true then at what model year did this use of rear O2 sensor commence?

Presume that if rear O2 now used for trimming A/F then it shouldn't be tweaked out by 'tuning' the ECU code?

ICE_BM wrote:There is comment elsewhere that on 'later' models the rear O2 sensor might be used for 'trimming' A/F ratios, can anyone comment on truth of this for Subaru ECUs and if true then at what model year did this use of rear O2 sensor commence?

Presume that if rear O2 now used for trimming A/F then it shouldn't be tweaked out by 'tuning' the ECU code?

2002 onwards have rear O2 sensor influencing the tune

Diy cats test:
https://www.youtube.com/results?search_ ... rguy+p0420

Great excuse to upgrade to raptor headers, 200 cell cats and a tune

I’ll throw something new into the equation though. The last time it happened a few days ago, the gear box ‘froze’. Eg, didn’t change down when slowing and coming to a stop. It stayed 5th. The dash was showing — where the 'D' for drive is meant to be. I managed to take off, very slowly though, pulled over safely and changed it into Manual mode so I could drive it home. I’ve been having the same problem with the lights on the dash as well but not the engine dying at 4500rpm. I did find the hack on YouTube to remove the lights though.
https://youtu.be/DhDzA-6dFm4
Next stop for my car will be the Subaru dealership though as I didn’t see the fault codes.