I bought this car used in Nov 2009 and today I found out I need a new engine harness. Is this common?
Toyota Q&AAsk Your Question
2008 Toyota Yaris Question: Repair - engine harness
Answer #1mastertech6371 April 20, 2011, 12:52Master
not at all. why were you told you needed this repair??
ReplyVisitor, April 20, 2011, 15:54
My check engine light was on so I took it to the dealer. They did a diagnostic and came back with cause: P0171 P0101, needs engine harness.
Answer #2ZeeTech April 20, 2011, 14:36Master
Unfortunately on the Yaris it is a common problem. Toyota has a warranty for 36 months / 36,000 miles for this problem, but if the car out of the warranty you need to pay for the repair.
The good thing is that the harness can be replaced in less than 2 hours.
Here is a TSB which tells a bit more:
Electrical - MIL ON/Multiple DTC's Set
November 5, 2008
M.I.L. "ON" DTC P010#, P0121, P0125, P0172, P035#, P2237, or P2238
Some 2007 - 2008 model year Yaris vehicles may exhibit a M.I.L. "ON" DTC condition with one of the following Diagnostic Trouble Codes (DTCs):
- P0101 - Mass Air Flow Circuit Range / Performance Problem
- P0102 - Mass Air Flow Circuit Low Input
- P0103 - Mass Air Flow Circuit High Input
- P0121 - Throttle / Pedal Position Sensor/Switch "A" Circuit Range/Performance Problem
- P0125 - Insufficient Coolant Temperature for Closed Loop Fuel Control
- P0172 - System Too Rich
- P035# - Ignition Coil "#" Primary / Secondary Circuit
- P2237 - Oxygen (A/F) Sensor Pumping Current Circuit / Open
- P2238 - Oxygen (A/F) Sensor Pumping Current Circuit Low
An improved engine wire harness has been developed to address this condition. Use the following repair procedure to diagnose and repair customer complaint vehicles.
Replymastertech6371, April 20, 2011, 14:39Master
thanks zee missed that tsb
ReplyZeeTech, April 20, 2011, 15:00Master
Roy, on alldata you can subscribe to receive new TSBs. They will e-mail them to you.
There are so many from different manufacturers, its impossible to keep all in mind, I usually read them and later it could give a clue.
ReplyVisitor, April 20, 2011, 15:56
The cause stated: P0171 AND P0101, needs engine harness. I don't see P0171 on your list.
ReplyZeeTech, April 20, 2011, 16:11Master
Since P0101 indicates a MAF sensor circuit problem the P0171 could relate to this even if it's not in the list.
Answer #3Visitor, May 03, 2011, 17:43
I just left ma yaris today , code PO121 , 2months after warranty (34000km).They told me after diagnostics that I need a new harness (700 plus 350 labour) .Told them that i consider it ridiculous after such mileage,complaint went to Toyota,will see what happens tomorrow .
ReplyVisitor, May 03, 2011, 17:56
I bought an extended warranty after what happened to my previous Toyota. I think this might be my last Toyota. I'm looking into Hyundai's now.
ReplyZeeTech, May 03, 2011, 18:11Master
$350 for labor?? It takes 1.8 hours to do. Do they have a $194 /hour labor rate?? This seems to be very high. Unfortunately the harness' retail price is around US$ 730.00.
ReplyVisitor, May 03, 2011, 18:24
@ Zee, the dealership told me it will take an entire day to do and to leave my car for the day.
ReplyZeeTech, May 03, 2011, 19:18Master
Well, in the recall info above Toyota included the time allowance -among the part numbers and VIN# info - and it's 1.8 hours. Unfortunately it's in a graphic (picture?) format and I can't post it here, but if you post an e-mail I can send you the entire thing.
ReplyVisitor, May 03, 2011, 20:25
@ Zee...pls send to email@example.com. Thanks
ReplyZeeTech, May 03, 2011, 20:32Master
On the way!