I have a 2014 ford escape 1.6l that went into limp mode for engine Temp sensor. Normal temp on the gauge. I shut the car off and started it back up. Engine light on and drove it home. It drove good. used my code reader and got the p1299. Brought the car to a shop and they could not find anything wrong. They said it would need to happen more frequent for troubleshooting which I understand. The problem is that when you shut it off and restart it the fault goes away. My teenage daughter drives this car and it is not safe for her if it goes into limp mode. It just happed to her and luckily she was not on a busy road/interstate. I am not one to shotgun parts, but I am leaning towards replacing the engine temp sensor. Any other suggestions would be appreciated. I do not feel this car is safe for her to drive.
P1299 help
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Welcome to the FFO!
If you do replace the temp sensor replace the correct one. There are multiple.
The sensor is the cylinder head overheat temp sensor.
Before you replace it you might take some other steps.
Do check and clean the wiring and/or connector.
Make sure the coolant is at the correct level.
You might remove the sensor and inspect.
The thermostat has to be opening when heated up. You might get an IR thermometer and shoot some readings
Has there been any recent cooling system service?
Action
If you do replace the temp sensor replace the correct one. There are multiple.
The sensor is the cylinder head overheat temp sensor.
Before you replace it you might take some other steps.
Do check and clean the wiring and/or connector.
Make sure the coolant is at the correct level.
You might remove the sensor and inspect.
The thermostat has to be opening when heated up. You might get an IR thermometer and shoot some readings
Has there been any recent cooling system service?
Action
I will spray the cylinder head temp sensor and coolant temp sensor electrical plugs with electrical cleaner and dry them. The 1st time it happened the car was sitting all day. Started it up and about 2 blocks down the road it went into limp mode for cyl. Head over temp.
I bought this car for my daughter in Oct. and I did have the coolant flushed in October.
I just drove it around town today for about 2 hours and it ran great. No issues. My daughter is scared to drive it, so I I am really thinking about just replacing the cylinder head sensor.
coolant is at the full line.
appreciate any advice.
I bought this car for my daughter in Oct. and I did have the coolant flushed in October.
I just drove it around town today for about 2 hours and it ran great. No issues. My daughter is scared to drive it, so I I am really thinking about just replacing the cylinder head sensor.
coolant is at the full line.
appreciate any advice.
Drove the for about 3 miles, engine light and it seemed to lose some power and not shift very efficiently. Drove home. Code p0234, overboost. No p1299 this time. Erased code. went for another 5 mile drive and ran fine. So here is what I’ve had in the last week.
1st time, p2610 and p1299. It went into limp mode. after car was shut off it ran fine but brought it to the shop as stated in post q above.
2nd time it coded after being at the shop, it gave a steer fault message while driving, it said to hit ok to clear, hit ok on the steering wheel and it immediately went into limp mode and message said cylinder head temp over heat. Shut the engine off waited about 15 seconds, started car and it drove fine home. Read the code and it was only a p1299 and nothing stored in messages about the steering.
Yesterday drove it around for errands for about 27 hours and it ran good. Wiggled the wires to the coolant temp sensor and cyl head sensor and no faults. Drove it around and it drove good.
today is when the p0234 happened as stated above.
I am at a loss of what to do. The garage I brought it to does not know either. Any it could be the ecm? Does anyone know anywhere I could send it to for testing?
1st time, p2610 and p1299. It went into limp mode. after car was shut off it ran fine but brought it to the shop as stated in post q above.
2nd time it coded after being at the shop, it gave a steer fault message while driving, it said to hit ok to clear, hit ok on the steering wheel and it immediately went into limp mode and message said cylinder head temp over heat. Shut the engine off waited about 15 seconds, started car and it drove fine home. Read the code and it was only a p1299 and nothing stored in messages about the steering.
Yesterday drove it around for errands for about 27 hours and it ran good. Wiggled the wires to the coolant temp sensor and cyl head sensor and no faults. Drove it around and it drove good.
today is when the p0234 happened as stated above.
I am at a loss of what to do. The garage I brought it to does not know either. Any it could be the ecm? Does anyone know anywhere I could send it to for testing?
If you do anything with the ECM(PCM) it would be to inspect the connector. The PCM is a ground side switch for many items. You might make sure the ground wires are connected well. There isn't a test other than company's that rebuild them. A failing module is an extremely rare event. So rare most companies that take in cores state that half of them are good.
For the P 0234 code the possible issues are
If you don't have a shop manual and wiring diagram, I would get those.
Action
For the P 0234 code the possible issues are
- Boost pressure sensor harness is open or shorted
- Boost pressure sensor circuit poor electrical connection
- Faulty boost pressure sensor
- Faulty Turbo/Super Charger
- Engine over temperature
- Ignition misfire exceeds the calibrated threshold
- Faulty Knock sensor (KS)
If you don't have a shop manual and wiring diagram, I would get those.
Action
Yes the code went away after I cleared it. Any reason you know I got a steering fault service message and when I hit ok on the steering wheel, Immediately got the cylinder head overheat. The steering message did not stay on the message menu on the car message center.
The car has a lot of communication errors. Replaced corroded end on main ground cable. Cleaned 3 ground connections under the the air cleaner. Replaced and cleaned connections for 50 amp fuses in Hugh current junction box. Replaced pcm power relay.
Hopefully problem will not come back.
Hopefully problem will not come back.
Drove the car today and after 2 blocks got an engine fault service now, hit ok on the steering wheel and got a steering assist fault and it went into limp mode, than it got a hill start assist not available message also. Turned off the ignition, waited 2 minutes and started the car and it drove fine again. I am at a loss with this car.
These are intermittent issues. Because you shut it down and the issue is no longer there.
The limp mode is a protection as the PCM believes the engine is out of oil (low or no pressure) and/or the coolant is over heated because there is low or no coolant. Hense "service now". Would definately make sure the engine oil and coolant are correct. Change out the fluids if there are any issues,
Is the steering electric?
Action
The limp mode is a protection as the PCM believes the engine is out of oil (low or no pressure) and/or the coolant is over heated because there is low or no coolant. Hense "service now". Would definately make sure the engine oil and coolant are correct. Change out the fluids if there are any issues,
Is the steering electric?
Action
I would suggest getting the shop manual set and the emissions manual.
These have step by step pin point tests to narrow to the problem.
IMO the issue is more complex than can be handled here.
I would be surprised if either of those modules are an issue. Module issues are very rare (very) and are not intermittent. The kind of exception to that is wiring/connector issues. And water damage.
Water damage shows up as discoloration on the case.
Connector issues can be seen when the connector is removed.
Action
These have step by step pin point tests to narrow to the problem.
IMO the issue is more complex than can be handled here.
I would be surprised if either of those modules are an issue. Module issues are very rare (very) and are not intermittent. The kind of exception to that is wiring/connector issues. And water damage.
Water damage shows up as discoloration on the case.
Connector issues can be seen when the connector is removed.
Action
Good point on connectors. I have been looking at schematics and see some other fuses to check and wI’ll have to start checking connectors. I just don’t understand why the steering assist fault message comes up and puts the vehicle into limp mode. Then when I check with my code reader I get a 1299 and p2610 and no codes about the steering At all.
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