Q: I have a 2000 honda civic EX and check engine light with D4 blinking ... and pulled the codes p1705 and p1768 ...

asked by on

I have a 2000 honda civic EX and check engine light with D4 blinking ... and pulled the codes p1705 and p1768 ... most likely what would i replace first ..
My car has an automatic transmission.

Trouble code P1705 implicates the throttle position sensor (TPS). A transmission fault (which is indicated by a flashing "D4") can arise if the TPS is malfunctioning. Consequently, I would recommend testing the TPS first. Once code P1705 is resolved, then code P1768 comes into play. P1768 implicates the clutch pressure control solenoid valve circuit. You want to check for a faulty solenoid, a solenoid valve harness that is open or shorted, or a poor electrical connection (high resistance, voltage drop). The testing of both of these components can be accomplishing using the Factory Service Manual "decision tree" and, as well, a scanner (or scope) is useful for TPS testing. During one mobile visit by a certified mechanic, both codes can be diagnosed if you request a check engine light diagnostic. Replacement of parts without a conclusive diagnostic is not recommended as it is usually a waste of your repair dollars. The cardinal rule is, prior to doing anything, be sure that you have confirmed the failure. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. I have a 2000 honda civic EX and check engine light with D4 blinking ... and pulled the codes p1705 and p1768 ...

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Replaced the transmission and now car won't start

I highly doubt the powertrain control module (PCM) (also known as the ECU) is bad. Code P025A indicates a problem with a faulty fuel pump or its circuit, which could definitely be causing the problems you are having. A...

Q: Q: My key won't turn or start the car

Hi, thanks for writing in. There are a few things that might be going on with your ignition switch. First, the ignition cylinder might be damaged if it won't turn when you insert the key. Second, it may be the...

Q: check engine light on and racing engine

You will need to have the Check Engine Light tested and the codes diagnosed to find the cause of the high idle. Since you say you are experiencing a racing engine, you may have a bad throttle position sensor or...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...