code nP0715/P1529
code nP0715/P1529
#2
03-25-2013, 07:55 AM
DESCRIPTION:
An improperly functioning input speed sensor or output speed sensor on a 1999-2001 Sonata, 2001 Elantra, 2001 Santa Fe and 2001 XG300 may result in the following conditions:
An improperly functioning input speed sensor or output speed sensor on a 1999-2001 Sonata, 2001 Elantra, 2001 Santa Fe and 2001 XG300 may result in the following conditions:
- Harsh P-R or P-D engagement shock
- Transaxle allows acceleration in 1st gear to 5000 rpm, then shifts into 3rd gear fail-safe
- Check Engine light on
- Diagnostic trouble codes:
- P0715 (no input speed sensor signal - open/short)
- P0720 (no output speed sensor signal - open/short)
- P1529 (TCM MIL request to ECM)
- Check for DTCs in both the Engineand Automatic Transaxle menus. If you find:
- Drive the vehicle for at least two key-on to key-off driving cycles. If the codes do not reset, return the vehicle to the customer. If P0715 or P0720 return, go to step 3.
- Use a DVOM to check the resistance of the wiring between the TCM and the input sensors and output sensors. If the resistance is:
- More than 1 ohm, repair or replace the wiring harness
- Less than 1 ohm, go to Step 4.
- Replace the transaxle control module (TCM).
#4
05-09-2013, 07:34 AM
A P0303 code means that the the car's computer has detected that cylinder #3 is not firing properly.
A P0305 code means that the the car's computer has detected that cylinder #5 is not firing properly.
Symptoms may include:
A P0305 code means that the the car's computer has detected that cylinder #5 is not firing properly.
Symptoms may include:
- the engine may be harder to start
- the engine may stumble / stumble, and/or hesitate
- other symptoms may also be present
- Faulty spark plug or wire
- Faulty coil (pack)
- Faulty oxygen sensor(s)
- Faulty fuel injector
- Burned exhaust valve
- Faulty catalytic converter(s)
- Running out of fuel
- Poor compression
- Defective computer
If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.
If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.
If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.
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